وَحَدَّثَنَاهُ إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا عِيسَى بْنُ يُونُسَ، حَدَّثَنَا الأَعْمَشُ، فِي هَذَا الإِسْنَادِ ‏.‏ بِنَحْوِ حَدِيثِهِمَا وَقَالَ إِنِّي لأَعْرِفُ النَّظَائِرَ الَّتِي كَانَ يَقْرَأُ بِهِنَّ رَسُولُ اللَّهِ صلى الله عليه وسلم اثْنَتَيْنِ فِي رَكْعَةٍ ‏.‏ عِشْرِينَ سُورَةً فِي عَشْرِ رَكَعَاتٍ ‏.‏

This hadith has been narrated by A'mash with the same chain of transmitters in which ('Abdullah b. Mas'ud) said: " I know the manners in which the Messenger of Allah (PBUH) recited the two surahs in one rak'ah and then twenty surahs in ten rak'ahs." Translation Not Available

Book Ref: Sahih Muslim Book 6 Hadith 1793
Web Ref:  Sahih Muslim Book 4 Hadith 822 c