Agniveshyagrihyasutra 2.5.10.27

2.5.10.27

atha yadi na varṣedeteṣāmeva kṛṣṇavrīhīṇāṃ sthālīpākaṃ śrapayitvā saptāhaṃ savanatrayahomaṃ kuryāt \

Now if it should not rain, having cooked a domestic offering of boiled rice with this very black rice, he should perform oblations at the three pressings for seven days.