Śrīmad-Bhāgavatam · Text 8.22.16
Who is speaking and story frame
श्रीप्रह्लाद उवाच
त्वयैव दत्तं पदमैन्द्रमूर्जितं
हृतं तदेवाद्य तथैव शोभनम् ।
मन्ये महानस्य कृतो ह्यनुग्रहो
विभ्रंशितो यच्छ्रिय आत्ममोहनात् ॥ १६ ॥
śrī-prahrāda uvāca
tvayaiva dattaṁ padam aindram ūrjitaṁ
hṛtaṁ tad evādya tathaiva śobhanam
manye mahān asya kṛto hy anugraho
vibhraṁśito yac chriya ātma-mohanāt
Prahlāda Mahārāja said: My Lord, it is Your Lordship who gave this Bali the very great opulence of the post of heavenly king, and now, today, it is You who have taken it all away. I think You have acted with equal beauty in both ways. Because his exalted position as King of heaven was putting him in the darkness of ignorance, You have done him a very merciful favor by taking away all his opulence.
Read Śrīla Prabhupāda's purport on Vedabase.io