Bhagavad Gita 7.22

स तया श्रद्धया युक्तस्तस्याराधनमीहते।लभते च ततः कामान्मयैव विहितान् हि तान्॥

sa tayā śraddhayā yuktastasyārādhanamīhate |labhate ca tataḥ kāmānmayaiva vihitān hi tān ||

Endowed with that faith, he engages in the worship of that form and obtains his desired outcome, which is ordained by Me alone.

If he worships one form alone with real faith, then his desires shall be fulfilled through that alone; for thus I have ordained.

Our plain-language meaning of this verse is waiting for scholar review.