Agnipurana 21.6

21.6

hṛdayañca śiraḥ śūlaṃ varmanetramathāstrakam /
śaṅkhaṃ cakraṃ gadāṃ padmaṃ śrīvatsaṃ kaustubhaṃ yajet //

and the heart, the head, the trident, the armor, the eye, and the weapon; / one should worship the conch, discus, mace, lotus, Śrīvatsa, and Kaustubha;