As every document is not accepted unless affirmed or confirmed by stamp and signature, so every message that is not confirmed by Mohammad's stamp is not true. (Malfuzal Ahmadiya edited by M.Manzur Ilahi pp.290)
Kama vile kila waraka usivyokubalika isipokuwa mpakauthibitishwe kwa muhuri na saini, kwa hiyo kila ujumbe ambao hauthibitishwi na muhuri wa Muhammad si wa kweli. (Malfuzal Ahmadiya edited by M. Manzur Ilahi pp.290)