बेरमात्रं च पूजायां संमतं वेदनिर्णये । स्वाविर्भावे च देवानां सकलं रूपमेव हि २३ ।
Only the Bera (idol) is considered appropriate for worship, as determined by the Vedic scriptures. In the divine manifestations of the gods, the form is indeed the essence itself.