Sahih Muslim Book - 53, Hadith - 7469

حَدَّثَنِى زُهَيْرُ بْنُ حَرْبٍ حَدَّثَنَا إِسْحَاقُ بْنُ عِيسَى حَدَّثَنَا مَالِكٌ عَنْ ثَوْرِ بْنِ زَيْدٍ الدِّيلِىِّ قَالَ سَمِعْتُ أَبَا الْغَيْثِ يُحَدِّثُ عَنْ أَبِى هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « كَافِلُ الْيَتِيمِ لَهُ أَوْ لِغَيْرِهِ أَنَا وَهُوَ كَهَاتَيْنِ فِى الْجَنَّةِ ». وَأَشَارَ مَالِكٌ بِالسَّبَّابَةِ وَالْوُسْطَى.

It was narrated that Abu Hurairah said: "The Messenger of Allah (s.a.w) said: 'The one who sponsors an orphan, whether it is a relative of his or not, he and I will be like these two in Paradise,"' and Malik (a sub narrator) pointed with his forefinger and middle finger.