Narrated Talq bin 'Ali (RA):

I heard Allah's Messenger (ﷺ) saying, "There are no two Witr (prayers) during one night." [Reported by Ahmad and ath-Thalathah and Ibn Hibban graded it Sahih (authentic)].

وَعَنْ طَلْقٍ بْنِ عَلِيٍّ ‏- رضى الله عنه ‏- قَالَ: سَمِعْتَ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-يَقُولُ: { لَا وِتْرَانِ فِي لَيْلَةٍ } رَوَاهُ أَحْمَدُ, وَالثَّلَاثَةُ, وَصَحَّحَهُ اِبْنُ حِبَّانَ .‏ [1]‏ .‏