https://masjidfurqan.co.uk/2014/06/15/it-is-obligatory-to-believe-and-acknowledge-everything-stated-by-allaah-and-his-messengers-imaam-sadi-rahimahullaah/
It is obligatory to believe (in and acknowledge) everything stated by Allaah and His Messengers--Imaam Sadi (rahimahullaah)