YV 3.2g

Illness seized him; 'Illness has seized the king', that (saying) is the origin of the 'king's evil'; in that he became worse, that is (the origin) of the 'bad illness'; because he got it from his wives, that is (the origin) of the 'wife's disease' (Jayenya); him who knows thus the origin of these illnesses, these illnesses do not visit. He approached them respectfully; they said, 'Let us choose a boon; do thou associate equally with us.' For him [2] they offered this oblation to the Adityas; they freed him from his evil case. For him who is seized by the bad illness he should offer this oblation to the Adityas; verily he has recourse to the Adityas with their own share; verily they free him from his evil case. He should offer at the new moon; verily with its waxing he makes him wax. The Puronuvakya is, 'He is born ever new'; verily thereby he bestows life upon him. The Yajya is, 'The shoot which the Adityas make to wax'; verily thereby he makes him wax. Prajapati assigned food to the gods; he said, 'Whatever shall be left over these worlds, be that mine.' That was left over these worlds, Indra, the king, Indra, the overlord, Indra, the sovereign; thence he milked these worlds threefold; that is the cause of its having three elements. For him of whom he desires, 'May he be an eater of food', let him offer this (offering) of three elements, to Indra, the king, a cake [1] on eleven potsherds, to Indra, the overlord, to Indra, the sovereign. Indra, the king, is this (world of earth), Indra, the overlord, is this (atmosphere), Indra, the sovereign, is yonder (world of heaven); verily he has recourse to these worlds with their own share; verily they bestow food on him; he becomes an eater of food. Even as one milks a cow ready to give milk by reason of its calf, so he milks these worlds, made ready, for desire, for food; he places (the cake) on potsherds face upwards, for variety.