Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 4
Sanskrit:
शिरस्तु तस्योभयलिङ्गमान-मेत्तदेव यत् पश्यति तद्धि चक्षु: ।अङ्गानि विष्णोरथ तज्जनानांपादोदकं यानि भजन्ति नित्यम् ॥ ४ ॥
ITRANS:
śiras tu tasyobhaya-liṅgam ānamettad eva yat paśyati tad dhi cakṣuḥaṅgāni viṣṇor atha taj-janānāṁpādodakaṁ yāni bhajanti nityam
Translation:
An actual head is one that bows down to the Lord in His manifestations among the moving and nonmoving creatures, real eyes are those that see only the Lord, and actual limbs are those which regularly honor the water that has bathed the Lord’s feet or those of His devotees.