قالَ رَسُولُ اللّهِ (صَلَّى اللّهُ عَلَيْهِ وَ آلِهِ وَسَلَّمَ): مُعَلَّمُ الْقُرآنِ يَسْتَغْـفِرُ لَـهُ كُلَّ شَيْءٍ حَتَّـى الْحُوتَ فِي الْبَحْرِ.

The Messenger of Allah (blessings of Allah be upon him and his family) has said: “Everything in existence prays for the forgiveness of the person who teaches the Qur’an - even the fish in the sea.”

Usulul Kafi, Volume 3, Page 301