Mahānirvāṇa Tantra 5.45

Translation

Having performed ācamana as before, O Śivā, he should invoke the holy waters into the water,

Word by word

ācamya

having done ācamana

pūrvavattōyaistīrthānyāvāhayēcchivē

as before, should invoke the holy waters into the water, O Śivā