Without fear, the child Kṛṣṇa was playing on the upper portion of Pūtanā Rākṣasī’s breast, and when the gopīs saw the child’s wonderful activities, they immediately came forward with great jubilation and picked Him up.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
बालं च तस्या उरसि क्रीडन्तमकुतोभयम् । गोप्यस्तूर्णं समभ्येत्य जगृहुर्जातसम्भ्रमाः
bālaṃ ca tasyā urasi krīḍantamakutobhayam | gopyastūrṇaṃ samabhyetya jagṛhurjātasambhramāḥ
SB 10.6.18