The HEILIGE Kojiklover ztz"l cites a number of other examples of this phenomenon of having two aspects to a mitzva which are both necessary but at the same time function independently. I urge you to read the whole teshuva but here is a bit of it:
Contribute and be a partner in spreading Torah to the masses. Money comes and goes but the merit of giving is eternal. Keep the light burning. Without you it might extinguish G-d forbid.
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