Hiranyakeshigrihyasutra 2.1.4.5

2.1.4.5

nāmayati na rudati yatra vayaṃ vadāmo yatra vābhimṛśāmasi \ ityubhāvabhimṛśyāthāsyai śirasta udakumbhamapihitaṃ nidadhāti \ āpo gṛheṣu jāgrata yathā deveṣu jāgratha \ evamasyai suputrāyai jāgrata \ iti \5\

With (the words), 'He does not suffer, he does not cry, when we speak to him and when we touch him'—he touches both breasts. Then he places a covered water-pot near her head, with (the formula), 'O waters, watch in the house. As you watch with the gods, thus watch over this wife, the mother of a good son.'