It wasnarrated that Jabir said:
"The Messenger of Allah (ﷺ), AbuBakrand 'Umar did not give us so much leeway in anything as they didwith regard to the prayer for the deceased," meaning that there wasnothing affixed.
English reference: Vol. 1, Book 6, Hadith 1501
Arabic reference: Book 6, Hadith 1568