Garudapurana 2.9.67

2.9.67

mantrairhemastathā kāryaḥ ṣaḍbhirnṛpa vidhānataḥ /
bahūnviprān bhojayethāstadratnāptadhanena vai /
evaṃ kṛte mahīpāla mama muktirbhaviṣyati //

And an oblation should be made according to rule with the six mantras, O king. / Feed many brahmins with the wealth obtained from that gem; / when this is done, O ruler of the earth, my liberation will come to pass.