Sunan An-Nasa'i

It was narrated from 'Abdullah that:A man came to him and said: ""Last night I recited Al-Mufassal in one rak'ah."" He said: ""That is like reciting poetry. But the Messenger of Allah (ﷺ) used to recite similar surahs, twenty surahs from Al-Mufassal, those that start with Ha-Mim