Musnad Ahmad 32:1843

Sulayman ibn Dawud narrated to us, Isma'il informed us, he said: Humayd informed me, from Anas, that the mother of Harithah came to the Messenger of Allah, may Allah bless him and grant him peace, and Harithah had perished on the day of Badr, struck by a stray arrow. She said: "O Messenger of Allah, you know the position Harithah holds in my heart. If he is in Paradise, I will not weep for him, but if he is otherwise, you shall see what I will do." He said to her: "Have you lost your mind? Is it only one Paradise? Indeed, they are many gardens, and he is in the highest Firdaws."