Bhagavad-gītā 7.21
BG 7.21
Open the full passageयो यो यां यां तनुं भक्तः श्रद्धयार्चितुमिच्छति । तस्य तस्याचलां श्रद्धां तामेव विदधाम्यहम् ॥२१॥
Sanskrit
yo yo yāṁ yāṁ tanuṁ bhaktaḥ śraddhayārcitum icchati tasya tasyācalāṁ śraddhāṁ tām eva vidadhāmy aham
Translation
I am in everyone's heart as the Supersoul. As soon as one desires to worship some demigod, I make his faith steady so that he can devote himself to that particular deity.