It wasnarrated that 'Aishah said:
"The Messenger of Allah (ﷺ) usedtosay Taslim after every two Rak'ah, and he would perform Witr withone Rak'ah." (JA)
English reference (JA): Vol. 1, Book 5, Hadith 1177 (JA)
Arabic reference (JA): Book 5, Hadith 1233 (JA)