the Prophet said: Whoever takes in an orphan among the Muslims to raise, to feed him and give him drink, Allah admits him into Paradise without a doubt, unless he has done a sin for which he is not forgiven."  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ قَبَضَ يَتِيمًا بَيْنَ الْمُسْلِمِينَ إِلَى طَعَامِهِ وَشَرَابِهِ أَدْخَلَهُ اللَّهُ الْجَنَّةَ الْبَتَّةَ إِلاَّ أَنْ يَعْمَلَ ذَنْبًا لاَ يُغْفَرُ لَهُ قَالَ وَفِي الْبَابِ عَنْ مُرَّةَ الْفِهْرِيِّ وَأَبِي هُرَيْرَةَ وَأَبِي أُمَامَةَ وَسَهْلِ بْنِ سَعْدٍ  

the Messenger of Allah said: " I and the sponsor of an orphan shall be in Paradise like these two."And he indicaed with his fingers, meaning his index and his middle finger  

قَالَ رَسُولُ اللَّهِ ﷺ أَنَا وَكَافِلُ الْيَتِيمِ فِي الْجَنَّةِ كَهَاتَيْنِ وَأَشَارَ بِأُصْبُعَيْهِ يَعْنِي السَّبَّابَةَ وَالْوُسْطَى