Humayd reported,
I heard Anas 
say, "Haritha was struck down on the day of Badr while still a young boy. His mother came to the Prophet ﷺ and said, 'Messenger of Allah, you know how dear Haritha was to me. If he is in Paradise, I will be patient and seek my reward with Allah, but if it is otherwise, you will see what I will do.'He replied, 'Woe to you, have you lost your senses? Is it just one Paradise? It is many gardens, and he is in the Garden of Firdaws.'"
Azami 8797
Sahihعن حميد قال
سمعت أنسا رضي الله عنه يقول: أصيب حارثة يوم بدر وهو غلام، فجاءت أمه إلى النبي ﷺ فقالت: يا رسول الله، قد عرفت منزلة حارثة مني، فإن يكن في الجنة أصبر وأحتسب وإن تك الأخرى تر ما أصنع فقال: ويحك، أو هبلت، أو جنة واحدة هي؟ إنها جنان كثيرة، وإنه لفي جنة الفردوس.
Bukhari narrated it in Maghazi (3982), from Abdullah bin Muhammad, who said, Muawiya bin Amr narrated to us, who said, Abu Ishaq (that is, Ibrahim bin Muhammad al-Fazari) narrated to us, from Humayd (that is, the Tall), from Anas, who said what follows.His saying, "Haritha was killed on the day of Badr" refers to Ibn Suraqah bin Harith bin Adi al-Ansari. His father, Suraqah, was a companion and was martyred on the day of Hunayn, and his mother was Rabee bint Nadr, the aunt of Anas bin Malik.His saying, "Woe to you" is an expression of compassion, though it has also been said that it is meant as a rebuke. And his saying, "or has she gone mad" means "has she been bereaved," that is, has she lost her child.