It was narrated from Umm Salamah that the Prophet (ﷺ) used to pray two short Rak’ah after Witr, sitting down
Hadith No. 1195
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Zubair Ali Zai:
Daif