Musnad Ahmad 3421

It was narrated that Salim bin Abil-Ja’d said: A man came to Ibn 'Abbas... And he narrated the hadeeth. Then he said: I heard your Prophet (ﷺ) say: “The slain one will come on the Day of Resurrection, holding his head - either he said, in his left hand, or in his right hand - with the veins of his neck flowing with blood, before the Throne of the Most Merciful, may He be blessed and exalted, saying: O Lord, ask this one why he killed me.”