Ka'b bin Malik reported: The Messenger of Allah (ﷺ) did not come back from the journey but by day in the forenoon, and when he arrived, he went first to the mosque, and having prayed two rak'ahs in it he sat down in it.

It has been reported on the authority of Salama bin Akwa' who said: On the day of the Battle of Khaibar my brother fought a fierce fight by the side of the Messenger of Allah (ﷺ) . His sword rebounded and killed him. The Companions of the Messenger of Allah (ﷺ) talked about his death and doubted (whether it was martyrdom). (They said): (He is) a man killed by his own weapon, and expressed doubt about his affair. Salama said: When the Messenger of Allah (ﷺ) returned from Khaibar, I said: Messenger of Allah, permit me that I may recite to you some rajaz verses. The Messenger of Allah (ﷺ) permitted him. 'Umar bin Khattab said: I know what you will recite. I recited: By God, if God had guided us not, We would have neither been guided aright nor practised charity, Nor offered prayers. The Messenger of Allah (ﷺ) said: What you have said is true, 'I (continued): And descend on us peace and tranquillity And keep us steadfast if we encounter (with our enemies) And the polytheists have rebelled against us. When I finished my rajaz, the Messenger of Allah (ﷺ) said: Who composed these verses? I said: They were composed by my brother. The Messenger of Allah (ﷺ) said: May God show mercy to him! I said: By God, some people are reluctant to invoke God's mercy on him (because) they say he is a man who died by his own sword. (Hearing this) the Messenger of Allah (ﷺ) said: He died as God's devotee and warrior. Ibn Shihab has said: I asked one of the sons of Salama bin Akwa' about (the death of 'Amir). He related to me a similar tradition except that he said: When I said some people were reluctant invoke God's blessings on him, the Messenger of Allah (ﷺ) said: They lied. ('Amir) died as God's devotee and warrior (in the cause of Allah). For him there is a double reward, and he pointed out this by putting his two fingers together.

'Abdullah bin K'ab, who was his (Ka'b's) guide as he became blind, reported that he heard from Ka'b bin Malik the story of his staying behind Allah's Messenger (ﷺ) from the expedition of Tabuk. The rest of the hadith is the same (but with this variation) that in the narration transmitted on the authority of Yunus (the words are): When Allah's Messenger (ﷺ) intended to set on any expedition he kept it as a secret, but he did not do so in this expedition. And in the narration transmitted on the authority of Muhammad bin 'Abdullah bin Muslim, there is no mention of Abu Khaithana (RA) and no mention of his meeting with Allah's Messenger (ﷺ) .

It is reported on the authority of 'Abdullah bin K'ab and he was the guide of Ka'b as he lost his eyesight and he was the greatest scholar amongst his people and he retained in his mind many ahadith of the Companions of Allah's Messenger (ﷺ) . He said: I heard my father Ka'b bin Malik, and he was one of those three whose repentance was accepted (by Allah). He transmitted that he never lagged behind Allah's Messenger (ﷺ) from any expedition that he undertook except two expeditions; the rest of the hadith is the same, and in the tradition narrated through another chain of transmitters the words are: "That Allah's Messenger (ﷺ) set out on an expedition with a large number of persons more than ten thousand and this could not be recorded in the census register."