The Witr - Section 2 Mishkat al-Masabih 1268
Arabic hadith text
وَعَنْ زَيْدِ بْنِ أَسْلَمَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ نَامَ عَنْ وَتْرِهِ فَلْيُصَلِّ إِذَا أَصْبَحَ» . رَوَاهُ التِّرْمِذِيُّ مُرْسلا
Translation
Zaid b. Aslam reported God’s Messenger as saying, “If any of you oversleeps and misses his witr, he should observe it in the morning.” Tirmidhi transmitted it in mursal form.