Musannaf Ibn Abi Shaybah 39476 — The great Battle of Badr, how it came

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that on the day of Badr the son of my paternal aunt, Harithah (may Allah be pleased with him), went with the Prophet (peace and blessings be upon him). This boy had gone merely to watch; he had not gone to fight. An arrow struck him and killed him. Then his mother, who was my paternal aunt, came to the Prophet (peace and blessings be upon him) and said: "O Messenger of Allah (peace and blessings be upon him), if my son Harithah is in Paradise, then I will be patient and hope for reward. Otherwise you will see what I do." He (peace and blessings be upon him) said: "O Umm Harithah, listen! There are many gardens, and Harithah is in the highest Firdaws."