What it does
Covers the causes of failure that orientation alone cannot fix.
Cautions
Explanation and notes
The classical writers gave equal marks to all four; dravya alone carries about 20 to 25 percent of the result. Although the building shapes the feelings of its residents, some binding karma (nikachit karma) can still force bad thoughts, so Prasad Mandan stresses correcting one's own bhav: a good house does not help someone who spends the day thinking ill of others.
During the battle with Andhakasur a drop of sweat fell to the earth and produced a being whose rampage made the earth shake. Brahma had him lie face down and promised that he would be worshipped with offerings and that not an inch of land would be built on without remembering him.
Every house, however small, carries the Vastu Purush's eyes, nose, ears, hands, feet, heart, navel and other parts, including the marma and ati-marma (vital) points. A column, pit or stud on these points harms the occupants, just as a speck of dust in the eye or an injury to a vital organ harms the body.
In the Jain account, during the bhog bhoomi of the third era kalpavriksha trees granted every wish, until rising sin made them stop giving. Adi Prabhu then taught the six means of livelihood, asi, masi, krishi, vidya, vanijya and shilpa, and gave the complete knowledge of Vastu to his fourth son Vishwakarma.
Vastu knowledge passed by memory until it was written down in texts such as Samarangana Sutradhara, Mayamatam, the Skanda, Agni, Vayu and Garuda Puranas, Vishwakarma Prakash, Aparajita Prichha, Praman Manjari, Vastu Rajvallabh, Prasad Mandan, Vastu Mandan and Shilpa Ratna, each with its own focus.
Start with Vishwakarma Prakash, the simplest, available in Hindi with the Sanskrit shlokas and their meaning (translated by Krishna Kumar Jugnu of Udaipur). Then read Mayamatam, both parts of Samarangana Sutradhara, Manasara and Raj Vallabh.
Raj Vallabh states that a temple with a large river flowing to its South becomes not merely a tirth but a mahatirth, because for a temple the water element stands for peace. Rules made for homes must not be applied mechanically to temples.
Before construction of a house or factory begins, the muhurta for the shilanyas or start of work is fixed from the rashi of the owner. If the Moon falls 4th, 8th or 12th from his rashi, money stays short however good the Vastu and the door.
At the shilanyas or bhoomi poojan of any house or factory the first tilak goes to the mason (shilpi), contractor or Vastu consultant, not the pandit, and they are given the best clothes and a shriphal (coconut). Their goodwill enters the building, while a craftsman's tears of hurt in the mortar act like a buried bone (shalya dosh).