Bhagavad Gita 9.22
But if a person meditates on Me and Me alone, worships Me always and everywhere, I will take upon Myself the fulfillment of their aspiration, and I will safeguard whatever they attain.
अनन्याश्चिन्तयन्तो मां ये जनाः पर्युपासते।
तेषां नित्याभियुक्तानां योगक्षेमं वहाम्यहम्॥ananyāścintayanto māṃ ye janāḥ paryupāsate|
teṣāṃ nityābhiyuktānāṃ yogakṣemaṃ vahāmyaham||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).