'A'isha reported Allah's Messenger (ﷺ) (as saying)
One who is proficient in the Qur'an is associated with the noble, upright, recording angels; and he who falters in it, and finds it difficult for him, will have two rewards.
This hadith has been reported with the same chain of transmitters by Qatada except with this change
" He who finds it hard (to recite the Qur'an) will have a double reward."