When the invincible Supreme Personality of Godhead, Krsna, heard the demigods crying "Alas! Alas!" from behind the clouds, He immediately enlarged Himself within the demon's (Aghasura's) throat - SB 10.12.30

Expressions researched:
"When the invincible Supreme Personality of Godhead, Kṛṣṇa, heard the demigods crying "Alas! Alas!" from behind the clouds, He immediately enlarged Himself within the demon's throat"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

When the invincible Supreme Personality of Godhead, Kṛṣṇa, heard the demigods crying "Alas! Alas!" from behind the clouds, He immediately enlarged Himself within the demon's throat, just to save Himself and the cowherd boys, His own associates, from the demon who wished to smash them.

SB 10.12.30, Translation and Purport

When the invincible Supreme Personality of Godhead, Kṛṣṇa, heard the demigods crying "Alas! Alas!" from behind the clouds, He immediately enlarged Himself within the demon's throat, just to save Himself and the cowherd boys, His own associates, from the demon who wished to smash them.

Such are the acts of Kṛṣṇa. paritrāṇāya sādhūnāṁ vināśāya ca duṣkṛtām (BG 4.8). By enlarging Himself within the throat of the demon, Kṛṣṇa suffocated and killed him and at the same time saved Himself and His associates from imminent death and also saved the demigods from lamentation.