Chāndogya Upaniṣad 5.2.7

5.2.7

atha khalv etayarcā paccha ācāmati \
tat savitur vṛṇīmaha ity ācāmati \
vayaṃ devasya bhojanam ity ācāmati \
śreṣṭhaṃ sarvadhātamam ity ācāmati \
turaṃ bhagasya dhīmahīti sarvaṃ pibati \
nirṇijya kaṃsaṃ camasaṃ vā paścād agneḥ saṃviśati \
carmaṇi vā sthaṇḍile vā vācaṃyamo '(S ) \
sa yadi striyaṃ paśyet samṛddhaṃ karmeti vidyāt \\502.7\

7. Verily then with this Rig verse he takes a sip at each hemistich:—

‘The food which is god Savitṛi’s,’

—here he takes a sip—

'That for ourselves do we prefer,' —here he takes a sip— 'The best, the all-refreshing food;' —here he takes a sip— 'The Giver's strength may we attain!' —here he takes a sip.

8. After having cleansed the drinking-vessel or goblet, he lies down to the west of the fire either on a skin or on the bare ground with voice restrained and self-possessed. If he should see a woman, he may know that the rite is successful.