In plain words
What their hands did was God's work! In this way they experienced all their senses with the feeling of offering them to God. Nowhere in them was there anything they called their own. Kṛṣṇa alone was theirs! A small example.
Freedom from Ahaṅkāra and from selfishness was found in the gopīs alone
Kṛṣṇa set forth an ideal as a fine witness to the Bhakti and prapatti of the gopīs. I have told you this many times. One day Kṛṣṇa pretended that He had a heavy head. He wanted medicine for this headache. Kṛṣṇa, who knows all, played out this līlā just when everyone was gathered together. Satyabhāmā, Rukmiṇī, Jāmbavatī, Nārada, all of them were close by. Kṛṣṇa would not take even a morsel of food. He put on quite a play. ‘I cannot bear this pain,’ He said. Nārada, seeing this scene: ‘Swami! Where is the right medicine for this? Tell me, and I will surely have it brought.’ ‘If you go to Vrepalle, bring back the dust of the gopīs' feet and put it on My head as a poultice, My headache will go,’ said Kṛṣṇa. ‘The gopīs are supreme devotees. The dust of the feet of those supreme devotees alone will ease the ache in My head,’ He said. At these words the Ahaṅkāra within Nārada came out. ‘Swami! Satataṃ yoginaḥ! I am always in yoga with Kṛṣṇa. Sarvadā sarva kāleṣu sarvatra kṛṣṇa cintanaṃ. Wherever I go, I am thinking of Kṛṣṇa. Are there greater devotees than I in this world?’ he asked. Kṛṣṇa did not accept this. ‘You may well be a devotee, Nārada! But only the dust of the feet of those gopīs will cool the ache in My head,’ He said. Nārada had some prajñāna. He kept showing all his cleverness in words. One who has boundless cleverness has boundless language. Moreover, one who has cleverness always has nothing but doubts, too! However much power of intellect he thinks he has, that much power for harm also keeps entering him.