In the previous chapter, Maitreya narrated the pastime of Lord Varaha, combining details of the two appearances of the Lord. He mentioned that the Lord fought with the demon while lifting the Earth (which happened at his second appearance), and Vidura became desirous of hearing more details about this pastime:
“Śrī Vidura said: O chief amongst the great sages, I have heard by disciplic succession that Hiraṇyākṣa, the original demon, was slain by the same form of sacrifices, the Personality of Godhead. What was the reason, O brāhmaṇa, for the fight between the demon king and Lord Boar while the Lord was lifting the earth as His pastime?
My mind has become very inquisitive, and therefore I am not satisfied with hearing the narration of the Lord’s appearance. Please, therefore, speak more and more to a devotee who is faithful.” (SB 3.14.3-4)
Srimad Bhagavatam #25: Pregnancy of Diti in the evening