While the child (Krsna) was sitting on the ground, a demon named Trnavarta, who was a servant of Kamsa's, came there as a whirlwind, at Kamsa's instigation, and very easily carried the child away into the air - SB 10.7.20

Expressions researched:
"While the child was sitting on the ground, a demon named Trnavarta, who was a servant of Kamsa's, came there as a whirlwind, at Kamsa's instigation, and very easily carried the child away into the air"

SB Canto 10.1 to 10.13

While the child was sitting on the ground, a demon named Tṛṇāvarta, who was a servant of Kaṁsa's, came there as a whirlwind, at Kaṁsa's instigation, and very easily carried the child away into the air.

SB 10.7.20, Translation and Purport:

While the child was sitting on the ground, a demon named Tṛṇāvarta, who was a servant of Kaṁsa's, came there as a whirlwind, at Kaṁsa's instigation, and very easily carried the child away into the air.

Kṛṣṇa's heaviness was unbearable for the child's mother, but when Tṛṇāvartāsura came, he immediately carried the child away. This was another demonstration of Kṛṣṇa's inconceivable energy. When the Tṛṇāvarta demon came, Kṛṣṇa became lighter than the grass so that the demon could carry Him away. This was ānanda-cinmaya-rasa, Kṛṣṇa's blissful, transcendental pleasure.