Verse 44

चेतः पदार्थे पतति यस्मिन्यस्मिन्यदा यदा ।तन्मयं तद्भवत्याशु तस्मिंस्तस्मिंस्तदा तदा

In plain words

Onto whatever object the mind falls, and whenever it falls there, it becomes at once made wholly of that -- then and there, upon that very thing.