From Sahih Muslim (Hadith 2014):
Umm Bisham hint Haritha b. Nu'man said:Our oven and that of the Messenger of Allah (ﷺ) was one for two years, or for one year or for a part of a year; and I learnt" Qaf. By the Glorious Qur'an" 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 sermon to the people
Reference: Muslim 2014