Agniveshyagrihyasutra 2.7.10.5

2.7.10.5

phālākṛṣṭābhiḥ devabrāhmaṇapitṛbhūtamanuṣyayajñānaharaharhutvāraṇyorvā kāle śaktitaḥ śarīraṃ pariśoṣayed yamaniyamamantropavāsādibhiḥ \

With [grains] not ploughed by a ploughshare, having offered day after day the sacrifices to the gods, Brahmins, ancestors, beings, and men, or [having gathered fire] from the two kindling sticks, he should dry up his body in due time according to his capacity, through restraints, observances, mantras, fasts, and the like.