Bhagavad-gītā 12.9
BG 12.9
Open the full passageअथ चित्तं समाधातुं न शक्नोषि मयि स्थिरम् । अभ्यासयोगेन ततो मामिच्छाप्तुं धनञ्जय ॥९॥
Sanskrit
atha cittaṁ samādhātuṁ na śaknoṣi mayi sthiram abhyāsa-yogena tato mām icchāptuṁ dhanañjaya
Translation
My dear Arjuna, O winner of wealth, if you cannot fix your mind upon Me without deviation, then follow the regulative principles of bhakti-yoga. In this way develop a desire to attain Me.