عَنْ بُرَيْدَةَ الْأَسْلَمِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((الْوِتْرُ حَقٌّ فَمَنْ لَمْ يُوْتِرْ فَلَيْسَ مِنَّا))، قَالَهَا ثَلَاثًا
Sayyiduna Buraidah Aslami (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him and his family) said three times: Witr is obligatory; whoever does not perform Witr is not one of us.