Chandogya Upanishad 5.2.5

5.2.5

(S ) svāhety agnāv ājyasya hutvā manthe saṃpātam avanayet \
pratiṣṭhāyai svāhety agnāv ājyasya hutvā manthe saṃpātam avanayet \
saṃpade svāhety agnāv ājyasya hutvā manthe saṃpātam avanayet \
āyatanāya svāhety agnāv ājyasya hutvā manthe saṃpātam avanayet \\502.5\

5. ‘Hail to the most excellent!’—with these words he should offer a libation of melted butter in the fire and pour the residue into the potion.

‘Hail to the firm basis!’—with these words he should offer a libation of melted butter in the fire and pour the residue into the potion.

‘Hail to the abode!’—with these words he should offer a libation of melted butter in the fire and pour the residue into the potion.