Ibn Masud took seventy surahs from the Prophet ﷺ

Then Abū Bakr came to him with a carved rock, so he collected water in it and Abū Bakr and I drank from it. Then I went to him afterwards and said, "Teach me from this Quran." He said, "Indeed, you are a young boy to be taught." I then took from him seventy surahs."

فَأَتَاهُ أَبُو بَكْرٍ بِصَخْرَةٍ مَنْقُورَةٍ فَاحْتَلَبَ فِيهَا فَشَرِبَ وَشَرِبَ أَبُو بَكْرٍ وَشَرِبْتُ۔ قَالَ ثُمَّ أَتَيْتُهُ بَعْدَ ذَلِكَ قُلْتُ: عَلِّمْنِي مِنْ هَذَا الْقُرْآنِ۔ قَالَ: «إِنَّكَ غُلَامٌ مُعَلَّمٌ۔» قَالَ: فَأَخَذْتُ مِنْ فِيهِ سَبْعِينَ سُورَةً۔