Hadith 1007
´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."
Hadith 1682
´It was narrated that Aishah said:` "The Messenger of Allah (ﷺ) prayed witr at the beginning (of the night) and at the end, and in the middle. And toward the end of his life, he settled on performing witr at the end of the night."