Śrīla Śukadeva Gosvāmī continued: All the gopīs, headed by mother Yaśodā, were bound by maternal affection. After they thus chanted mantras to protect the child, mother Yaśodā gave the child the nipple of her breast to suck and then got Him to lie down on His bed.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
श्रीशुक उवाच । इति प्रणयबद्धाभिर्गोपीभिः कृतरक्षणम् । पाययित्वा स्तनं माता सन्न्यवेशयदात्मजम्
śrīśuka uvāca | iti praṇayabaddhābhirgopībhiḥ kṛtarakṣaṇam | pāyayitvā stanaṃ mātā sannyaveśayadātmajam
SB 10.6.30