Abdur Rahman bin Nafi’ (may Allah have mercy on him) narrates: I said to Sayyiduna Abdullah bin Umar (may Allah be pleased with them both): I have recited the Mufassal surahs in a single rak’ah. So he said: Did you do that? If Allah, the Mighty and Majestic, had willed, He would have revealed them all together. Give each surah its due in bowing and prostration.