SB 10.12.31
tato ’tikayasya niruddha-margino
hy udgirna-drster bhramatas tv itas tatah
purno ’ntar-ange pavano niruddho
murdhan vinirbhidya vinirgato bahih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Then, because Krsna had increased the size of His body, the demon extended his own body to a very large size. Nonetheless, his breathing stopped, he suffocated, and his eyes rolled here and there and popped out. The demon’s life air, however, could not pass through any outlet, and therefore it finally burst out through a hole in the top of the demon’s head.