Yōga Sūtra 3.12

ततः पुनः शान्तोदितौ तुल्यप्रत्ययौ चित्तस्यैकाग्रतापरिणामः।

tataḥ punaḥ śāntōditau tulyapratyayau cittasyaikāgratāpariṇāmaḥ।

[ततः पुनः शान्त उदितौ तुल्य प्रत्ययौ चित्तस्य एकाग्रता परिणामः।
tataḥ = then; punaḥ = again; śānta = peaceful / paused; uditau = on repeated arousal or upward; tulya = weighing in; pratyayau = with firm conviction; cittasya = of consciousness; ēkāgratā pariṇāmaḥ = effect of one pointed attention is obtained;]

Then, again, weighing in on the arousal and paused states of the consciousness, with firm conviction, ēkāgratā-pariṇāmaḥ (Effect-of-One pointed attention) is obtained.