Jami' at-Tirmidhi
Jami` at-Tirmidhi 453
حَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا أَبُو بَكْرِ بْنُ عَيَّاشٍ، حَدَّثَنَا أَبُو إِسْحَاقَ، عَنْ عَاصِمِ بْنِ ضَمْرَةَ، عَنْ عَلِيٍّ، قَالَ الْوِتْرُ لَيْسَ بِحَتْمٍ كَصَلاَتِكُمُ الْمَكْتُوبَةِ وَلَكِنْ سَنَّ رَسُولُ اللَّهِ صلى الله عليه وسلم وَقَالَ " إِنَّ اللَّهَ وِتْرٌ يُحِبُّ الْوِتْرَ فَأَوْتِرُوا يَا أَهْلَ الْقُرْآنِ " . قَالَ وَفِي الْبَابِ عَنِ ابْنِ عُمَرَ وَابْنِ مَسْعُودٍ وَابْنِ عَبَّاسٍ . قَالَ أَبُو عِيسَى حَدِيثُ عَلِيٍّ حَدِيثٌ حَسَنٌ .
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Ali said: Witr is not obligatory like your prescribed prayer, but the Messenger of Allah established it as a Sunnah and said: "Allah is One and loves what is odd-numbered, so perform witr, people of the Quran." Reports on this topic are also narrated from Ibn Umar, Ibn Masud, and Ibn Abbas. Abu Isa said: The hadith of Ali is hasan.