Sunan an-Nasa'i 1006
سنن النسائي#1006SahihIt 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Isnaad
Al-AlbaniSahih Isnaad
Zubair Ali ZaiIsnaad Sahih
In-book reference: 11:131