tad-abhijño 'pi bhagavān
sarvātmā sarva-darśanaḥ
praśrayāvanato 'pṛcchad
vṛddhān nanda-purogamān
tat-abhijnah -- being in full knowledge about it; api -- although; bhagavan -- the Supreme Lord; sarva-atma -- the Supersoul within everyone's heart; sarva-darsanah -- the omniscient Personality of Godhead; prasraya-avanatah -- bowing down humbly; apricchat -- He inquired; vriddhan -- from the elders; nanda-purah-gaman -- headed by Maharaja Nanda.
Lord Krishna was eager to enact His pastime of lifting Govardhana Hill and defeating the false pride of Indra, and thus He cleverly inquired from His father about the imminent sacrifice.