Śrīmad-Bhāgavatam · Text 11.20.12
Who is speaking and story frame
स्वर्गिणोऽप्येतमिच्छन्ति लोकं निरयिणस्तथा ।
साधकं ज्ञानभक्तिभ्यामुभयं तदसाधकम् ॥ १२ ॥
svargiṇo ’py etam icchanti
lokaṁ nirayiṇas tathā
sādhakaṁ jñāna-bhaktibhyām
ubhayaṁ tad-asādhakam
The residents of both heaven and hell desire human birth on the earth planet because human life facilitates the achievement of transcendental knowledge and love of Godhead, whereas neither heavenly nor hellish bodies efficiently provide such opportunities.
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.