Śrīmad-Bhāgavatam · Text 11.13.1
Who is speaking and story frame
श्रीभगवानुवाच
सत्त्वं रजस्तम इति गुणा बुद्धेर्न चात्मन: ।
सत्त्वेनान्यतमौ हन्यात् सत्त्वं सत्त्वेन चैव हि ॥ १ ॥
śrī-bhagavān uvāca
sattvaṁ rajas tama iti
guṇā buddher na cātmanaḥ
sattvenānyatamau hanyāt
sattvaṁ sattvena caiva hi
The Supreme Personality of Godhead said: The three modes of material nature, namely goodness, passion and ignorance, pertain to material intelligence and not to the spirit soul. By development of material goodness one can conquer the modes of passion and ignorance, and by cultivation of transcendental goodness one may free oneself even from material goodness.
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.