The Messenger of Allah said, "Whoever teaches a verse from the Book of Allah will receive its reward as long as it is recited."
قال رسول الله: من علم آية من كتاب الله عز وجل كان له ثوابها ما تليت.
No references are available.
Abu Sahl Qattan narrated it in his "Hadithuhu an Shuyukhihi" (2/243/4), as cited in Sahihah (1335), he said, we were told by Muhammad bin Jahm, who narrated from Yazid bin Harun, who informed us from Abu Malik Ashjai, from his father (who is Tariq bin Ashyam), and then he related the hadith.This chain is hasan, its narrators being the narrators of Muslim except for Muhammad bin Jahm, whom Daraqutni deemed reliable.