Ca, Śār., 8, 10.1 tata ṛtvik prāguttarasyāṃ diśyagārasya prākpravaṇam udakpravaṇaṃ vā pradeśamabhisamīkṣya gomayodakābhyāṃ sthaṇḍilamupalipya prokṣya codakena vedīm asmin sthāpayet /