It was narrated from Umm Hani’ bint Abu Talib that on the day of the Conquest (of Makkah) the Messenger of Allah (ﷺ) prayed voluntary Duha with eight Rak’ah, saying the Salam after each two Rak’ah.
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 1323
Hadith Gradingالألبانی:منكر بزيادة التسليم والمحفوظ دونها | زبیر علی زئی:إسناده حسن