SB 10.85.36
tayoh samaniya varasanam muda
nivistayos tatra mahatmanos tayoh
dadhara padav avanijya taj jalam
sa-vrnda a-brahma punad yad ambu ha
Translation:
Bali took pleasure in offering Them elevated seats. After They sat down, he washed the feet of the two Supreme Personalities. Then he took that water, which purifies the whole world even up to Lord Brahma, and poured it upon himself and his followers.