Matsyapurana 68.21

68.21

pañcamaṃ ca punarmadhye dadhyakṣatavibhūṣitam
sthāpayedavraṇaṃ kumbhaṃ saptarcenābhimantritam //

Four pitchers should be placed in four corners by a Brâhmaṇa versed in the Vedas, with a Kuśa grass in his hand, and a fifth one should be placed in the centre, after filling it in with curds, uncooked rice, etc., reciting the seven Rik verses, and then Agni should be invoked.—20-21.