One who contributes from his wealth for the purpose of writing or publishing a sefer of a Tzaddik –
Behold, at any given time, and in any corner of the world, that a person studies from this sefer, the Tzaddik [on high] evokes merit on behalf of the donor through whom the sefer was disseminated.
—The Rebbe, Igrot Kodesh, vol 2
Art of Giving
by Rabbi Menachem Mendel of Lubavitch, The Tzemach Tzedek
What's the ideal way to give tzedakah? Specifically, is it best to give whatever we can at any given time regardless of the amount, or should we postpone our tzedakah giving until such time as we can afford to make a more sizable contribution? Or is neither approach necessarily preferable to the other? The Art of Giving emphatically exclaims that, yes, it does indeed make a difference how we go about giving to tzedakah.