It was narrated from `Uthman that the Messenger of Allah (ﷺ) did wudoo’ washing each part of the body three times. Grade: A hadeeth that is Sahih because of corroborating evidence] (Darussalam) Reference : Musnad Ahmad 403 In-book reference : Book 4, Hadith 5
حَدَّثَنَا وَكِيعٌ، عَنْ إِسْرَائِيلَ، عَنْ عَامِرِ بْنِ شَقِيقٍ، عَنْ أَبِي وَائِلٍ، عَنْ عُثْمَانَ، رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تَوَضَّأَ ثَلَاثًا ثَلَاثًا.