Sutra:
147. sEshipakkal sEshabUthan izhiyum thuRai; prajai mulaiyilE vAyvaikkumApOlE.

Meaning:
The right part of the Lord (the sarva seshi), that is matched to the nature of the chetana (the seshabhUta) and to which he becomes attached, is His divine feet. This is similar to a baby automatically latching on to its mother's breast.

Sri PBA Swami's Sarartha Deepikai:
Other than the divine quality described in the previous sutra, it is seeking His divine feet that matches to the nature of the chetana. Just as a small baby would seek only its mother's breast even though she has many body parts, so too the chetana who reaches toward the seshi will seek only His divine feet.