بُلُوغُ الْمَرَامِ
Bulugh al-Maram 384
The Book of Prayer
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] .
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)].
Sunnah.com reference: Book 2, Hadith 288