(1) Rust on the heart is removed. (hadees)
(2) Love of Allah Almighty is increased. (subject matter of hadees)
(3) Each letter fetches a reward of ten, even if recited without understanding. (hadees)
If a person says that what is the use of reciting without understanding then he is either ignorant or irreligious.
(From the Shiny Primer (Noorani Qai-da))