SB 10.51.56
tasmad visrjyasisa isa sarvato
rajas-tamah-sattva-gunanubandhanah
nirañjanam nirgunam advayam param
tvam jñapti-matram purusam vrajamy aham
Translation:
Therefore, O Lord, having put aside all objects of material desire, which are bound to the modes of passion, ignorance and goodness, I am approaching You, the Supreme Personality of Godhead, for shelter. You are not covered by mundane designations; rather, You are the Supreme Absolute Truth, full in pure knowledge and transcendental to the material modes.
Purport:
The word nirgunam here indicates that the Lord’s existence is beyond the qualities of material nature. One might argue that Lord Krsna’s body is made of material nature, but here the word advayam refutes that argument. There is no duality in Lord Krsna’s existence. His eternal, spiritual body is Krsna, and Krsna is God.