Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 4
श्रद्दधानाय भक्ताय ब्रूहि तज्जन्मविस्तरम् ।ऋषे न तृप्यति मन: परं कौतूहलं हि मे ॥ ४ ॥
śraddadhānāya bhaktāyabrūhi taj-janma-vistaramṛṣe na tṛpyati manaḥparaṁ kautūhalaṁ hi me
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.
One who is actually faithful and inquisitive is qualified to hear the transcendental pastimes of the appearance and disappearance of the Supreme Personality of Godhead. Vidura was a suitable candidate to receive such transcendental messages.