It is narrated from al-Qasim bin Rabi'ah (may Allah have mercy on him) that when Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him), while reciting "Glorify the name of your Lord, the Most High", reached the verse "We will make you recite, so you will not forget" [Surah al-A'la: 6] , he would go over the Qur'an to retain it, for fear of forgetting. The narrator said: I heard Sayyiduna Sa'd (may Allah be pleased with him) recite the verse "Ma nansakh min ayatin aw tansaha" (Whatever verse We abrogate or you forget) [Surah al-Baqarah: 106] , so I said: Sa'id bin al-Musayyib recites it as "aw nunsiha" (or We cause it to be forgotten). Sayyiduna Sa'd (may Allah be pleased with him) said: The Qur'an was not revealed to al-Musayyib nor to the family of al-Musayyib; Allah, the Mighty and Majestic, has said: "We will make you recite, so you will not forget" [Surah al-A'la: 6] , and He said: "And remember your Lord when you forget." [Surah al-Kahf: 24] This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.