Bhagavad Gita 10.17

कथं विद्यामहं योगिस्त्वां सदा परिचिन्तन |
केषु केषु च भावेषु चिन्त्योऽसि भगवान्मया

Translation

O Supreme Master of Yog, how may I know You and think of You. And while meditating, in what forms can I think of You, O Supreme Divine Personality?