SB 11.27.20
krta-nyasah krta-nyasam
mad-arcam paninamrjet
kalasam proksaniyam ca
yathavad upasadhayet
Translation:
The devotee should sanctify the various parts of his body by touching them and chanting mantras. He should do the same for My Deity form, and then with his hands he should clean the Deity of old flowers and the remnants of previous offerings. He should properly prepare the sacred pot and the vessel containing water for sprinkling.
Purport:
Before beginning the process of worship mentioned here, one should offer obeisances to one’s spiritual master, the Deity and other worshipable personalities.