“If he reads the book he is benefitted still more, or if he gives the book to someone else for reading, both he and the other person is benefitted. Even if one does not read the book but simply holds it and sees it, he is benefitted. If he simply gives small donation towards the work of Krsna consciousness he is benefitted. And anyone who distributes these transcendental literatures, he is also benefitted.”
Srila Prabhupada Letter to German Disciples -- Bombay, 6 May 1977.