Agni Purana 40.18

40.18

madhye catuṣpade sthāpyā brahmaṇe tilataṇḍulāḥ /
carakīṃ māṣasarpibhyāṃ skandaṃ kṛśarayāsṛjā //

in the four squares in the center, sesame seeds and rice grains should be deposited for Brahmā; / Carakī with black gram and clarified butter; Skanda with kṛśara and blood;