Musnad Ahmad 32:2071

'Affan narrated to us, Aban narrated to us, Qatadah narrated to us, from Anas ibn Malik, who said: Harithah was struck on the day of Badr. The mother of Harithah said: "O Prophet of Allah, if my son has attained Paradise, [I will be patient], otherwise I will weep intensely for him." He said: "O mother of Harithah, it is many gardens within Paradise, and Harithah has attained the highest Firdaws."