Bhagavatapurana 10.89.10

10.89.10

punīhi saha-lokaṃ māṃ loka-pālāṃś ca mad-gatān /
pādodakena bhavatas tīrthānāṃ tīrtha-kāriṇā //

10 & 11. "O father, thy feet are very delicate, O great sage", so saying the Lord with His own hand soothingly pressed the feet of the brahmin and said, 'purify Me, O worshipful one, all the world and its protectors depending on Me, with the water washing thy feet, which hallows all the waters.