Śrīmad-Bhāgavatam · Text 11.20.23
Who is speaking and story frame
निर्विण्णस्य विरक्तस्य पुरुषस्योक्तवेदिन: ।
मनस्त्यजति दौरात्म्यं चिन्तितस्यानुचिन्तया ॥ २३ ॥
nirviṇṇasya viraktasya
puruṣasyokta-vedinaḥ
manas tyajati daurātmyaṁ
cintitasyānucintayā
When a person is disgusted with the temporary, illusory nature of this world and is thus detached from it, his mind, guided by the instructions of his spiritual master, considers again and again the nature of this world and eventually gives up the false identification with matter.
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.