In Śrīmad-Bhāgavatam, Tenth Canto, Sixteenth Chapter, verse 10, there is the following description. When Kṛṣṇa was chastising the Kāliya-nāga in the Yamunā, the big snake wrapped his coils all over Kṛṣṇa’s body, and upon seeing Kṛṣṇa in this situation, all His dear cowherd friends became greatly disturbed. Out of bereavement, distress and fear, they became bewildered and began to fall on the ground. Because the cowherd boys were under the illusion that Kṛṣṇa could be in some mishap, their symptoms are not at all astonishing; they had dedicated their friendship, their possessions, their desires and their very selves to Kṛṣṇa.