"I was with Ibn Umar on a journey and I fell behind him. He said: 'Where were you?' I said: 'I prayed Al-Witr.' He said: 'Is there not a good exampled for you in Messenger of Allah? I saw Messenger of Allah performing Al-Witr on his mount.'"  

أَلَيْسَ لَكَ فِي رَسُولِ اللَّهِ أُسْوَةٌ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُوتِرُ عَلَى رَاحِلَتِهِ قَالَ وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ