Garudapurana 3.24.81

3.24.81

paścāddharernamanaṃ kāryameva sāṣṭāṅgarūpaṃ praviśeddevageham /
punarviśedvārataḥ saṃsthitaḥ sa pīṭhasthadevānmānasā cintayīta //

Then obeisance to Hari must certainly be made with the eight-limbed prostration; one should enter the house of the God. / Having entered, standing at the door, he should mentally meditate upon the deities abiding on the pedestal.