Jubayr ibn Muṭʿim reports:
سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَرَأَ فِي الْمَغْرِبِ بِالطُّورِ. (Ṣaḥīḥ al-Bukhārī, 765)
Translation: I heard the Messenger of Allah ﷺ recite Sūrah al-Ṭūr in the Maghrib prayer.
The matn (متن) is the report's content. Here it describes the Prophet's ﷺ recitation.