Even the beloved girlfriends of Lord Kṛṣṇa in Vṛndāvana, the gopīs, the dust of whose feet was desired by Śrī Uddhava and beyond whom no one is more dear to Kṛṣṇa, regard themselves as Kṛṣṇa's maidservants.
Śrī Caitanya-caritāmṛta Ādī-līlā 6.65-66, Translation