Kaushitakagrihyasutra 2.3.10

2.3.10

āpo nāma stha śivā nāma sthaujā nāma sthājarā nāma sthāmṛtā nāma sthābhayā nāma stha tāsāṃ vo 'śīya sumatau mā dhatta ityenaṃ trirapa ācamayya svastino mimītāmiti pañcarcena daṇḍaṃ prayacchati \10\

With: 'Waters are your name; auspicious are your name; vigor are your name; unaging are your name; immortal are your name; fearless are your name; may I partake of those [waters] of yours; place me in your favor,' having made him sip water three times, he hands him the staff with the five-verse hymn: 'May he measure out welfare for us.'