It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that Sayyidah al-Rubayyi' bint al-Nadr (may Allah be pleased with her) came to the Prophet (peace and blessings be upon him) and said: "O Messenger of Allah, my son Harithah was martyred on the day of Badr. If he is in Paradise, I will be patient and hope for the reward; and if it is otherwise, I will exert myself in weeping." He (peace and blessings be upon him) said: "O Umm Harithah, there are many gardens in Paradise, and your son has attained al-Firdaws al-A'la (the highest Paradise)."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21035