Vedantasara - Verse 23
Sanskrit
निगृहीतस्य मनसः श्रवणादौ तदनुगुणविषये च समाधिः - समाधानम्
Swami Nikhilananda's Translation
Samadhana is the constant concentration of the mind, thus restrained, on hearing etc., of the scriptural passages and other objects that are conducive to these.
Index: Vedantasara

Muni's Play