The Messenger of Allah ﷺ said, "The one who cares for an orphan and I will be in Paradise like these two," and he gestured with his two fingers, meaning the index and middle fingers.
حدثنا عبد الله بن عمران أبو القاسم المكي القرشي حدثنا عبد العزيز بن أبي حازم عن أبيه
قال رسول الله ﷺ أنا وكافل اليتيم في الجنة كهاتين وأشار بأصبعيه يعني السبابة والوسطى
Bukhari also narrated it in the Book of Divorce, chapter on lian and the statement of Allah Almighty, "Those who accuse their wives..." etc., no. 5304, from the hadith of Abdul-Aziz bin Abu Hazim, through him.