كتاب الشعر
51  
Hair

Yahya related to me from Malik that Safwan ibn Sulaym heard that the Prophet, may Allah bless him and grant him peace, said, "I and the one who guards the orphan, whether for himself or for someone else, will be like these two in the Garden, when he has taqwa," indicating his middle and index fingers.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ صَفْوَانَ بْنِ سُلَيْمٍ، أَنَّهُ بَلَغَهُ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏ "‏ أَنَا وَكَافِلُ الْيَتِيمِ لَهُ أَوْ لِغَيْرِهِ فِي الْجَنَّةِ كَهَاتَيْنِ إِذَا اتَّقَى ‏"‏ ‏.‏ وَأَشَارَ بِإِصْبُعَيْهِ الْوُسْطَى وَالَّتِي تَلِي الإِبْهَامَ ‏.‏
Sunnah.com reference : Book 51, Hadith 5
USC-MSA web (English) reference : Book 51, Hadith 5
Arabic reference : Book 51, Hadith 1737