SB 10.18.29
sa ahatah sapadi visirna-mastako
mukhad vaman rudhiram apasmrto ’surah
maha-ravam vyasur apatat samirayan
girir yatha maghavata ayudhahatah
Translation:
Thus smashed by Balarama’s fist, Pralamba’s head immediately cracked open. The demon vomited blood from his mouth and lost all consciousness, and then with a great noise he fell lifeless on the ground, like a mountain devastated by Indra.