that Messenger of Allah ( ﷺ) said: One who makes efforts (for earning to be spent) on a widow and the destitute is like a striver in the cause of Allah, and I think he also said: He is like one who constantly stands for prayer and observes fast without breaking it.  

عَنِ النَّبِيِّ ﷺ قَالَ: «السَّاعِي عَلَى الأَرْمَلَةِ وَالْمِسْكِينِ كَالْمُجَاهِدِ فِي سَبِيلِ اللَّهِ۔» وَأَحْسِبُهُ قَالَ: «وَكَالْقَائِمِ لاَ يَفْتُرُ وَكَالصَّائِمِ لاَ يُفْطِرُ۔»  

One who looks after the orphan whether he is his relative or not, I and he would be together in Paradise like this, and Malik (explained it) with the gesture by drawing his index finger and middle finger close together.  

قَالَ رَسُولُ اللَّهِ ﷺ كَافِلُ الْيَتِيمِ لَهُ أَوْ لِغَيْرِهِ أَنَا وَهُوَ كَهَاتَيْنِ فِي الْجَنَّةِ وَأَشَارَ مَالِكٌ بِالسَّبَّابَةِ وَالْوُسْطَى