Malik said he heard that a man asked Ibn ‘Umar whether the <i>witr</i> was obligatory, and ‘Abdallah said, “God’s Messenger observed the <i>witr</i> and the Muslims observed the <i>witr</i>.” The man kept repeating his question and ‘Abdallah kept saying, “God’s Messenger observed the <i>witr</i> and the Muslims observed the <i>witr</i>.” He transmitted it in <i>al-Muwatta</i>.

وَعَنْ مَالِكٍ بَلَغَهُ أَنَّ رَجُلًا سَأَلَ ابْنَ عُمَرَ عَنِ الْوِتْرِ: أَوَاجِبٌ هُوَ؟ فَقَالَ عَبْدُ اللَّهِ: قَدْ أَوْتَرَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَوْتَرَ الْمُسْلِمُونَ. فَجَعَلَ الرَّجُلُ يُرَدِّدُ عَلَيْهِ وَعَبْدُ اللَّهِ يَقُولُ: أَوْتَرَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَوْتَرَ الْمُسْلِمُونَ. رَوَاهُ فِي الْمُوَطَّأ