Śrīmad-Bhāgavatam · Text 12.13.10
Who is speaking and story frame
इदं भगवता पूर्वं ब्रह्मणे नाभिपङ्कजे ।
स्थिताय भवभीताय कारुण्यात् सम्प्रकाशितम् ॥ १० ॥
idaṁ bhagavatā pūrvaṁ
brahmaṇe nābhi-paṅkaje
sthitāya bhava-bhītāya
kāruṇyāt samprakāśitam
It was to Lord Brahmā that the Supreme Personality of Godhead first revealed the Śrīmad-Bhāgavatam in full. At the time, Brahmā, frightened by material existence, was sitting on the lotus flower that had grown from the Lord’s navel.
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.