Shatapatha Brahmana 10.2.5.9

10.2.5.9

athātaścitipurīṣāṇāmeva mīmāṃsā māsam prathamā citirmāsam purīṣametāvānvāsantika ṛtau kāmastadyāvānvāsantika ṛtau kāmastaṃ tatsarvamātmānamabhisaṃcinute

Now, then, the inquiry as to the earth-layers of the altar-pile. One month (the building of) the first layer (of bricks takes), and one month the layer of earth,--so long desire (lasts) in the spring season (of two months): he thus builds for himself a body so as to obtain all of whatever desire there is in the spring season.