The Dagger used to Martyr him

“When Abu Lu‘lu‘ made the resolve to kill Hazrat Umar (ra), he very diligently crafted the double-edged dagger, sharpened it and then covered it in poison. He then took it to Hormuzan and asked what he thought about the dagger. He answered, ‘I believe it will kill whoever you strike it with.’

“Hormuzan was among the commanders of the Persians. He was captured by the Muslims in Tustur and sent to Medina. When he saw Hazrat Umar (ra), he enquired about the whereabouts of his guards and gatekeepers, as has been mentioned before. The Companions (ra) answered that he had no guard, gatekeeper, secretary or a treasurer, upon which he stated that he ought to be a prophet. Nevertheless, he later became a Muslim. Hazrat Umar (ra) appointed 2,000 [dirhams] for him and gave him a place to reside in Medina.”