Authentic
graded by Al-Albani
Mishkat al-Masabih 864
وَعَن الفرافصة بن عُمَيْر الْحَنَفِيّ قَالَ: مَا أَخَذْتُ سُورَةَ يُوسُفَ إِلَّا مِنْ قِرَاءَةِ عُثْمَانَ بْنِ عَفَّانَ إِيَّاهَا فِي الصُّبْحِ وَمن كَثْرَة مَا كَانَ يُرَدِّدهَا. رَوَاهُ مَالك
Al-Farafisa b. 'Umair al-Hanafi said that he learned Sura Yusuf (Al-Qur’an; 12) simply from the recitation of it by ‘Uthman b. ‘Affan in the morning prayer, owing to the great number of times he repeated it. Malik transmitted it.
Reported by Malik (No. 184). Cited in Mishkat al-Masabih (No. 864).