पयः पृथिव्यामिति च पयसा स्नानमाचरेत् । दधिक्राव्णेतिमंत्रेण दधिस्नानं च कारयेत् 1.20.२० ।
The ceremonial ablution with milk shall be performed with the mantra “Payaḥ Pṛthivyām”[18] etc. The ceremonial ablution with curd shall be performed with the mantra “Dadhi Krāvṇaḥ[19]” etc.