Bhagavatapurana 11.27.9

11.27.9

arcāyāṃ sthaṇḍile 'gnau vā sūrye vāpsu hṛdi dvijaḥ /
dravyeṇa bhakti-yukto 'rcet sva-guruṃ mām amāyayā //

9. In an image, on the bare ground, in fire, in the sun, in the sun, in water, in the heart, or in a brahmin, he should with sincerity and devotion and with the necessary articles worship Me, his preceptor (father).