Garudapurana 2.4.147

2.4.147

paridhānaṃ paṭṭasūtraṃhṛdaye caiva vinyaset /
ṛddhivṛddhī bhujau dvau ca cakṣurbhyāñca kapardakam //

A garment of silk thread should be placed on the heart,
Ṛddhi and Vṛddhi herbs as the two arms, and a cowrie-shell for the two eyes;