Haritha was struck down at the Battle of Badr while still a young boy. His mother came to the Prophet ﷺ and said, "Messenger of Allah, you know the place Haritha held in my heart. If he is in Paradise, I will be patient and seek my reward from Allah. But if it is otherwise, you will see what I do."He replied, "Woe to you, have you lost your senses? Is it just one Garden? They are many gardens, and he is indeed in the Garden of Firdaws."
أصيب حارثة يوم بدر وهو غلام، فجاءت أمه إلى النبي ﷺ فقالت: يا رسول الله، قد عرفت منزلة حارثة مني، فإن يك في الجنة أصبر وأحتسب، وإن تكن الأخرى تر ما أصنع؟ فقال: ويحك، أو هبلت، أو جنة واحدة هي؟ إنها جنان كثيرة، وإنه لفي جنة الفردوس.
Bukhari narrated it in the chapters on Softening of Hearts (6550), from Abdullah bin Muhammad, who said, "Muawiya bin Amr narrated to us, who said, 'Abu Ishaq narrated to us, from Humayd, from Anas,'" and he mentioned it.