Śrīmad-Bhāgavatam · Text 10.3.53
Who is speaking and story frame
यशोदा नन्दपत्नी च जातं परमबुध्यत ।
न तल्लिङ्गं परिश्रान्ता निद्रयापगतस्मृति: ॥ ५३ ॥
yaśodā nanda-patnī ca
jātaṁ param abudhyata
na tal-liṅgaṁ pariśrāntā
nidrayāpagata-smṛtiḥ
Exhausted by the labor of childbirth, Yaśodā was overwhelmed with sleep and unable to understand what kind of child had been born to her.
Read Śrīla Prabhupāda's purport on Vedabase.io