Dalil

Mishkat al-Masabih 1255

The Witr - Section 1

وَعَنِ ابْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «الْوَتْرُ رَكْعَةٌ مِنْ آخر اللَّيْل». رَوَاهُ مُسلم

Translation

He reported God’s Messenger as saying, “The witr * is a rak'a at the end of the night.” * Literally ‘single’, or ‘odd’, used of an odd number of rak'as prayed at some time during the night. Muslim transmitted it.

Grades by grader

Abu GhuddahSahihgraded on nasai:1689fawazahmed0
MuslimSoundgraded on muslim:752ahadithunlocked
Zubair Ali ZaiSoundgraded on nasai:1689fawazahmed0, hadithunlocked, sunnah.com
al-AlbaniSahihgraded on nasai:1689fawazahmed0

Same hadith, other wordings