SB 10.12.26
tavat pravistas tv asurodarantaram
param na girnah sisavah sa-vatsah
pratiksamanena bakari-vesanam
hata-sva-kanta-smaranena raksasa
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In the meantime, while Krsna was considering how to stop them, all the cowherd boys entered the mouth of the demon. The demon, however, did not swallow them, for he was thinking of his own relatives who had been killed by Krsna and was just waiting for Krsna to enter his mouth.