Aaya Must Exceed Vyaya — Prosperity Check
The Aaya-Vyaya comparison is the supreme test in Vastu numerology — the Aaya (in
Local term: आय > व्यय — समृद्धि जाँच (Āya > Vyaya — Samṛddhi Jāṁch)
Modern Vastu practice recognises the Aaya-Vyaya comparison as the most critical proportional quality check — it effectively filters building dimensions into two classes: those whose modular remainder arithmetic favours accumulation (Aaya-dominant) and those that favour depletion (Vyaya-dominant). Contemporary Vastu software automates the comparison, flagging Vyaya-dominant dimensions and suggesting the minimum plinth adjustment needed to flip the balance. Some architects now include an Aaya-Vyaya Certificate as part of the building's compliance documentation.
Source: Contemporary Vastu compilations; Architectural proportion theory; Modern Vastu Ganita guides
Unique: Modern Vastu software automates the Aaya-Vyaya comparison — the architect enters external dimensions in metres, the tool converts to Hasta, computes both remainders, and flags any Vyaya-dominant result with the minimum plinth adjustment needed to achieve Aaya dominance. Some firms issue a printed Aaya-Vyaya Prosperity Certificate as part of the Vastu compliance package.
The Rule in Modern Vastu
Ideal
Apply the Aaya-Vyaya comparison to the building's external perimeter using metric-to-Hasta conversion, verifying that the Aaya remainder strictly exceeds the Vyaya remainder for prosperity-aligned proportions.
Acceptable
Simplified comparison using metric dimensions alone is acceptable as a minimum modern standard when traditional Hasta measurement is impractical.
Prohibited
Ignoring the Aaya-Vyaya comparison entirely is considered negligent when the calculation can be automated at zero cost — a Vyaya-dominant building is the most well-documented inauspicious condition in Vastu literature.
Sub-Rules
- Aaya remainder exceeds Vyaya remainder — the building's proportions favour income over expenditure, confirming prosperity alignment▲ Major
- Aaya remainder significantly exceeds Vyaya remainder — strong prosperity-dominant proportions with a comfortable margin of income over expenditure▲ Major
- Vyaya remainder exceeds Aaya remainder — the building's proportions favour expenditure over income, creating a wealth-draining mathematical signature▼ Major
- Aaya-Vyaya comparison not performed — whether the building favours income or expenditure is unknown and the prosperity status remains unverified▼ Minor
The Aaya-Vyaya comparison is the supreme test in Vastu numerology — the Aaya (income) remainder from dividing the external perimeter must strictly exceed the Vyaya (expenditure) remainder. When this condition is met, the building's proportions mathematically favour wealth accumulation; when violated, the structure becomes a Vyaya-griha (expenditure-house) that drains occupants' finances regardless of their earning capacity. Even a 1-Angula plinth adjustment can restore the balance.
Common Violations
Vyaya remainder exceeds Aaya remainder — expenditure-dominant proportions creating a wealth-draining building
Traditional consequence: The building's proportions create a mathematical dissonance with cosmic wealth cycles — occupants experience persistent expenditure exceeding income regardless of their earning capacity. Classical texts compare a Vyaya-dominant building to a cracked vessel: however much wealth is poured in, more leaks out. The Mayamatam classifies such structures as Vyaya-griha and prescribes immediate dimensional correction.
Aaya-Vyaya comparison not performed — prosperity alignment of the building is unknown and unverified
Traditional consequence: Without the Aaya-Vyaya comparison, the most critical numerological status of the building is left to chance. The structure may happen to have favourable proportions, or it may be silently draining wealth. Classical authorities consider this negligence equivalent to a merchant who never checks whether his expenses exceed his income — ruin may be underway without detection.
How Other Traditions Compare
Relative to Modern Vastu
The Varanasi Sthapati guilds maintained pre-computed Aaya-Vyaya difference tables in their Ganita-padhati manuscripts — the Sthapati could look up any plinth dimension and instantly determine whether Aaya would dominate Vyaya. Rajasthani Silawat masons inscribed the Aaya-Vyaya ratio (not just individual values) on the foundation stone as permanent proof of prosperity alignment.
Peshwa-era Wadas in Pune show physical evidence of plinth micro-adjustments of 2-3 cm specifically made to shift the Aaya-Vyaya balance — the outer wall jogs inward at precise points where the Sutradhar calculated that the adjustment would flip Vyaya dominance to Aaya dominance. The Satara Sutradhar guild maintained Aaya-Vyaya flip-tables calibrated to the Marathi Hasta.
Tamil Sthapatis of the Vishwakarma community in Kumbakonam insist that Aaya must exceed Vyaya by at least 2 Angula-remainder units — not merely exceed, but dominate. The Mayamatam prescribes that when Aaya equals Vyaya, the building is still classified as inauspicious, a stricter standard found only in Tamil Agama practice. Siddha mathematical tradition adds a secondary Amsha (fractional) check to the Aaya-Vyaya comparison.
Kakatiya guild record stones at Warangal Thousand-Pillar Temple contain paired Aaya-Vyaya remainder values carved side by side in Telugu numerals — the oldest surviving physical evidence that the comparison (not just individual computation) was the critical test. Telugu Sthapatis use the Kishku-Hasta (24 Angulas) as the base unit, producing different remainder pairs than the North Indian 26-Angula Hasta.
Jain Basadis at Mudabidri contain inscribed Aaya-Vyaya comparison records showing both remainders and the difference between them — the Sthapati recorded the margin of Aaya dominance as a permanent mathematical certificate of prosperity alignment. Hoysala temple plinths show systematic 1-2 Angula offsets consistent with Aaya-Vyaya balance corrections rather than simple geometric rounding.
The Perumthachan lineage of Kerala master carpenters treated the Aaya-Vyaya announcement as a verbal contract between architect and cosmos — the Thachan states both remainders aloud, declares Aaya dominant, and the householder verbally accepts. If Vyaya exceeds Aaya, the Thachan is honour-bound to refuse construction until the plinth is redesigned using the Kishku-Kol measuring rod.
Solanki-era Havelis in Patan contain paired Aaya-Vyaya values inscribed in Gujarati numerals on the courtyard foundation — the Aaya value is always written in larger script to visually confirm income dominance. The Jain Sthapati tradition treats the Aaya-Vyaya comparison as a prerequisite for Vastupujana, and a Vyaya-dominant result automatically suspends the ceremony until correction is made.
Bengali Sutradhar guilds of Nabadwip maintained Aaya-Vyaya comparison charts calibrated to the Bengali Hasta (23 Angulas) — these charts identified which plinth dimensions guaranteed Aaya dominance. The dual Ganaka-Purohit declaration system is unique to Bengal: the Ganaka announces the mathematical result, and the Purohit gives the spiritual verdict, creating a two-authority validation of the prosperity check.
The Jagannath Temple at Puri is traditionally cited as the supreme exemplar of Aaya-dominant proportions — its external perimeter yields an Aaya remainder significantly exceeding its Vyaya remainder, and Kalinga Sthapatis reference its dimensions as the gold standard. The Kishku-Mana base unit produces different Aaya-Vyaya remainder pairs than other regional standards, requiring Kalinga-specific comparison tables.
Punjabi Raj-Mistri guilds maintained Aaya-Vyaya comparison tables in their Ganit-pothi calibrated to the Punjabi Gaz (yard measure). The Sikh building tradition emphasises that honest comparison of income and expenditure remainders is itself a form of Seva — the Raj-Mistri serves the householder by ensuring truthful mathematical harmony. Golden Temple renovations historically included Aaya-Vyaya verification as a mandatory step.
Terms in Modern Vastu
Universal:
Remedies & Solutions
Automated Aaya-Vyaya comparison via Vastu software with minimum-adjustment calculation — modern standard
Modern VastuPrinted Aaya-Vyaya Prosperity Certificate as part of Vastu compliance documentation
Modern VastuPerform the Aaya-Vyaya comparison on the building's external perimeter. If Vyaya exceeds Aaya, adjust the outer plinth dimension by 1-2 Angulas (2-4 cm) to shift the Aaya remainder above the Vyaya remainder — this is the most direct and effective correction.
If physical plinth adjustment is not feasible, perform Budha Graha Shanti (Mercury pacification) Homa — a fire ritual specifically prescribed for correcting Aaya-Vyaya imbalance, as Mercury governs financial calculation and commercial balance.
Consult a qualified Sthapati (traditional architect) for precise Aaya-Vyaya analysis using regional Hasta/Angula standards and identification of the minimum plinth adjustment needed to flip the balance to Aaya-dominant.
Remedies from other traditions
Plinth adjustment using pre-computed Aaya-Vyaya difference tables — North Indian Sthapati technique
Vedic VastuBudha Graha Shanti Homa if post-construction correction is required
Plinth micro-adjustment at outer wall to flip Aaya-Vyaya balance — Maharashtrian Sutradhar technique
HemadpanthiTulsi Vrindavan placement at the corrected perimeter point to sanctify the adjustment
Classical Sources
“When the remainder of Aaya surpasseth the remainder of Vyaya, the dwelling shall fill its master's granary and coffers like monsoon rains filling a well-built reservoir; but when Vyaya surpasseth Aaya, the house devoureth wealth as a cracked vessel loseth water — no amount of earning shall suffice to stay the outflow.”
“Of all the Shadvarga calculations, the comparison of Aaya and Vyaya remainders is the supreme test — for what profiteth a man to build with auspicious Nakshatra and favourable Yoni if his dwelling's very proportions drain away his livelihood? Let the Sthapati ensure Aaya remaineth the greater, even if the plinth must be adjusted by a single Angula.”
“The wise Sthapati shall divide the perimeter by twelve for Aaya and by ten for Vyaya, comparing the two remainders as a merchant compareth his income and expenditure ledgers. If the Vyaya remainder exceedeth or equalleth the Aaya, the building is condemned as a Vyaya-griha — an abode where wealth floweth outward ceaselessly.”
“Vishvakarma declared: among all the tests of a dwelling's fitness, none surpasseth the Aaya-Vyaya balance — for a house whose expenditure-number dominateth its income-number is as a field sown upon salt earth: however much seed the farmer casteth, the harvest shall not repay the labour.”
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