Bhagavad Gita · Dhyana Yoga (Atma-samyama Yoga)Chapter 6, Shloka 26 (6.26)

Shankaracharya — two methods. Yasmād yasmāt nimittāt śabdādeḥ niścarati … svabhāva-doṣāt — whatever object, sound or the like, the mind goes out towards through the fault of its nature; there are two ways to restrain it from there: (1) tat-tan-nimittaṃ yāthātmya-nirūpaṇena ābhāsīkṛtya — seeing the truth of that object and so making it a mere "appearance" (hollow); (2) vairāgya-bhāvanayā ca — through the cultivation of dispassion. The fruit: yogābhyāsa-balāt yoginaḥ ātmany eva praśāmyati manaḥ.

Acharya Ramanuja. Cala-svabhāvatayā ātmani asthiraṃ manaḥ yato yato viṣaya-prāvaṇya-hetoḥ bahir niścarati — wherever the mind, restless by nature, runs outward because of its inclination towards objects; tatas tato yatnena mano niyamya ātmani eva atiśayita-sukha-bhāvanayā vaśaṃ nayet — restraining it from there with effort, let one bring it under control in the self through the sense of a surpassing happiness.

The difference (lovely): Shankara — seeing the hollowness of objects, and dispassion (away from the object); Ramanuja — the sense of greater happiness in the self (a pull towards the self). One "push", one "pull" — both work together.