Śrīmad-Bhāgavatam · Text 10.31.4
Who is speaking and story frame
न खलु गोपीकानन्दनो भवान्
अखिलदेहिनामन्तरात्मदृक् ।
विखनसार्थितो विश्वगुप्तये
सख उदेयिवान् सात्वतां कुले ॥ ४ ॥
na khalu gopīkā-nandano bhavān
akhila-dehinām antarātma-dṛk
vikhanasārthito viśva-guptaye
sakha udeyivān sātvatāṁ kule
You are not actually the son of the gopī Yaśodā, O friend, but rather the indwelling witness in the hearts of all embodied souls. Because Lord Brahmā prayed for You to come and protect the universe, You have now appeared in the Sātvata dynasty.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.