CC Ādi 17.14

tabe catur-bhuja hailā, tina aṅga vakra
dui haste veṇu bājāya, duye śaṅkha-cakra
Word for word: 
tabe — thereafter; catuḥ-bhuja — four-armed; hailā — became; tina — three; aṅga — body; vakra — curved; dui haste — in two hands; veṇu bājāya — blowing the flute; duye — in two (hands); śaṅkha-cakra — conchshell and disc.
Translation: 
Thereafter the Lord showed Him His four-armed form, standing in a three-curved posture. With two hands He played upon a flute, and in the other two He carried a conchshell and disc.