SB 10.10.40

śrī-bhagavān uvāca — the Supreme Personality of Godhead said; jñātam — everything is known; mama — to Me; purā — in the past; eva — indeed; etat — this incident; ṛṣiṇā — by the great sage Nārada; karuṇā-ātmanā — because he was very, very kind to you; yat — which; śrī-mada-andhayoḥ — who had become mad after material opulence and had thus become blind; vāgbhiḥ — by words or by cursing; vibhraṁśaḥ — falling down from the heavenly planet to become arjuna trees here; anugrahaḥ kṛtaḥ — this was a great favor done by him to you.