بُلُوغُ الْمَرَامِ
Bulugh al-Maram 453
The Book of Prayer
وَعَنْ أُمِّ هِشَامٍ بِنْتِ حَارِثَةَ رَضِيَ اَللَّهُ عَنْهَا قَالَتْ: { مَا أَخَذْتُ: ق وَالْقُرْآنِ اَلْمَجِيدِ , إِلَّا عَنْ لِسَانِ رَسُولِ اَللَّهِ - صلى الله عليه وسلم -يَقْرَؤُهَا كُلَّ جُمُعَةٍ عَلَى اَلْمِنْبَرِ إِذَا خَطَبَ اَلنَّاسَ } رَوَاهُ مُسْلِمٌ . [1] .
Umm Hisham (RA) daughter of Haritha said: I learnt Surat Qaf (Chapter 50) from no other source than the tongue of Allah's Messenger (ﷺ) who used to recite it every Friday on the pulpit when he delivered the Khutbah (sermon) to the people." [Reported by Muslim].
Sunnah.com reference: Book 2, Hadith 373