Ibn `Abbas said, "I have learnt all the Muhkam Suras during the life time of Allah's Messenger (ﷺ)." I said to him, 'What is meant by the Muhkam?" He replied, "The Mufassal."
Sahih al-Bukhari Book 66, Hadith 59
← Previous Hadith Those Suras which you people call the Mufassal, are the Muhkam. And Ibn `Abbas said, "Allah's Apostle died when I was a boy of ten years, and I had learnt the Muhkam (of the Qur'an).

Sahih al-Bukhari Book 66, Hadith 58 Next Hadith → The Prophet (ﷺ) heard a man reciting the Qur'an in the mosque and said, "May Allah bestow His Mercy on him, as he has reminded me of such-and-such Verses of such a Surah."

Sahih al-Bukhari Book 66, Hadith 60