SB 4.8.50
padbhyam nakha-mani-srenya
vilasadbhyam samarcatam
hrt-padma-karnika-dhisnyam
akramyatmany avasthitam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Real yogis meditate upon the transcendental form of the Lord as He stands on the whorl of the lotus of their hearts, the jewellike nails of His lotus feet glittering.