The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1785

Ibn 'Abbas reported Allah's Messenger (may peace be upon him) as saying: Gabriel taught me to recite in one style. I replied to him and kept asking him to give more (styles), till he reached seven modes (of recitation). Ibn Shibab said: It has reached me that these seven styles are essentially one, not differing about what is permitted and what is forbidden.

Source materials are from the University of Southern California MSA site
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