Narrated Ibn Abu Mulaika:
Muawiya offered one rak`a witr prayer after the `Isha prayer, and at that time a freed slave of Ibn `Abbas was present. He (i.e. the slave) went to Ibn `Abbas (and told him that Muawiya offered one rak`a witr prayer). Ibn `Abbas said, "Leave him, for he was in the company of Allah's Messenger (ﷺ)."
Reference | : Sahih al-Bukhari 3764 |
In-book reference | : Book 62, Hadith 109 |
USC-MSA web (English) reference | : Vol. 5, Book 57, Hadith 108 |
(deprecated numbering scheme) |