Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 6

Sanskrit:

धारयन्त्यतिकृच्छ्रेण प्राय: प्राणान् कथञ्चन ।प्रत्यागमनसन्देशैर्बल्ल‍व्यो मे मदात्मिका: ॥ ६ ॥

ITRANS:

dhārayanty ati-kṛcchreṇaprāyaḥ prāṇān kathañcanapratyāgamana-sandeśairballavyo me mad-ātmikāḥ

Translation:

Simply because I have promised to return to them, My fully devoted cowherd girlfriends struggle to maintain their lives somehow or other.

Purport:

According to Śrīla Viśvanātha Cakravartī, although the gopīs of Vṛndāvana were apparently married, their husbands actually had no contact whatsoever with their supremely attractive qualities of form, taste, fragrance, sound, touch and so on. Rather, their husbands merely presumed, “These are our wives.” In other words, by Lord Kṛṣṇa’s spiritual potency, the gopīs existed entirely for His pleasure, and Kṛṣṇa loved them in the mood of a paramour. In fact, the gopīs were manifestations of Kṛṣṇa’s internal nature, His supreme pleasure potency, and on the spiritual platform they attracted the Lord by their pure love. Nanda Mahārāja and mother Yaśodā, Lord Kṛṣṇa’s parents in Vṛndāvana, had also attained a most exalted state of love for Kṛṣṇa, and they too could barely maintain their lives in His absence. Thus Uddhava would also give special attention to them.