Hadith 1669
´It was narrated from Salim, from his father, that :` The Prophet (ﷺ) said: "Prayers at night are two by two, then if you fear that dawn will come, pray witr with one rak'ah."
Hadith 3688
´It was narrated from Sa'd bin 'Ubadah that he consulted the Prophet about a vow which his mother had to fulfill, but she died before doing so. The Messenger of Allah said:` "Fulfill it on her behalf."