HAKIM 1118:
from Muḥammad b. ʿAbdullāh al-Ḥaḍramī —
‘Ali ؓ said: Verily, Witr is not a must like your prescribed prayers, but the Messenger of Allah ﷺ prayed Witr, then he said: “Pray Witr, O people of the Qurʿan. Pray Witr, for Allah is One and loves that which is odd numbered.” (Using translation from Aḥmad 1262)
الحاكم ١١١٨:
عن محمد بن عبد الله الحضرمي —
عَلِيٌّ إِنَّ الْوِتْرَ لَيْسَ بِحَتْمٍ كَصَلَاتِكُمُ الْمَكْتُوبَةِ وَلَكِنَّ رَسُولَ اللَّهِ ﷺ أَوْتَرَ ثُمَّ قَالَ «يَا أَهْلَ الْقُرْآنِ أَوْتِرُوا فَإِنَّ اللَّهَ وِتْرٌ يُحِبُّ الْوِتْرَ» وَمِنَ الشَّوَاهِدِ بِهَذَا الْحَدِيثِ مَا
hadithunlocked.com