Jñāneśvarī (commentary on the Bhagavadgītā) 2.262

2.262

kāṃ udakamaya sakaḷa |
jarhī jāhaleṃ ase mahītaḷa |
tarī āpaṇa ghepe kevaḷa |
ārtīcajogeṃ ||

Or, even if the entire surface of the earth
were filled with water,
one takes only as much
as serves one's thirst.