Musannaf Ibn Abi Shayba 3:2825

Abu Bakr narrated to us, he said: Abdullah bin Numayr narrated to us, he said: Muhammad bin Ishaq narrated to us, from Abdullah bin Abi Bakr, from Yahya bin Abdullah, from Abd al-Rahman bin Sa'd bin Zurarah, from Umm Hashim bint Jariyah (or Harithah), she said: I did not learn "Qaf. By the Glorious Qur'an" except from the tongue of the Messenger of Allah, may Allah bless him and grant him peace, as he would recite it to the people every Friday when he delivered the sermon to them.