Sunan Abi Dawud, Hadith 5131 ⓘ
Sahl (b. Sa’d) reported the prophet (May peace be upon him) as saying; I and the one who takes the responsibility of an orphan will be in Paradise thus, and he joined his middle finger and forefinger.
حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ بْنِ سُفْيَانَ، أَخْبَرَنَا عَبْدُ الْعَزِيزِ، - يَعْنِي ابْنَ أَبِي حَازِمٍ - قَالَ حَدَّثَنِي أَبِي، عَنْ سَهْلٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " أَنَا وَكَافِلُ الْيَتِيمِ كَهَاتَيْنِ فِي الْجَنَّةِ " . وَقَرَنَ بَيْنَ أُصْبُعَيْهِ الْوُسْطَى وَالَّتِي تَلِي الإِبْهَامَ .
also referenced under: Hadith 5150 (DarusSalam)