Bhagavatapurana 8.19.16

8.19.16

tasmāt tvatto mahīmīṣadvṛṇe 'haṃ varadarṣabhāt /
padāni trīṇi daityendra sammitāni padā mama //

16. Therefore from thee the foremost among the liberal donors, I ask for a small piece of land, but three feet of ground, O great one of Diti's sons, measured with My own foot.