SB 11.30.2

brahma-śāpopasaṁsṛṣṭe
 sva-kule yādavarṣabhaḥ
preyasīṁ sarva-netrāṇāṁ
 tanuṁ sa katham atyajat
Synonyms: 
brahma-śāpa — by the curse of the brāhmaṇas; upasaṁsṛṣṭe — having been destroyed; sva-kule — His own family; yādava-ṛṣabhaḥ — the chief of the Yadus; preyasīm — most dear; sarva-netrāṇām — to all eyes; tanum — the body; saḥ — He; katham — how; atyajat — gave up.
Translation: 
After His own dynasty met destruction from the curse of the brāhmaṇas, how could the best of the Yadus give up His body, the dearmost object of all eyes?
Purport: 

In relation to this verse, Śrīla Jīva Gosvāmī explains that the Personality of Godhead never gives up His spiritual body, which is eternal, full of bliss and knowledge. The word katham therefore indicates “How is it possible?”, meaning it is not actually possible for Lord Kṛṣṇa to give up His eternal form, which is preyasīṁ sarva-netrāṇām, the most attractive object of pleasure for the eyes and all other senses.