عَنْ أَبِي ذَرٍّ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا مِنْ عَبْدٍ مُسْلِمٍ يُنْفِقُ مِنْ كُلِّ مَالٍ لَهُ زَوْجَيْنِ فِي سَبِيلِ اللَّهِ إِلَّا اسْتَقْبَلَتْهُ حَجَبَةُ الْجَنَّةِ كُلُّهُمْ يَدْعُوهُ إِلَى مَا عِنْدَهُ» . قُلْتُ: وَكَيْفَ ذَلِكَ؟ قَالَ: «إِنْ كَانَتْ إِبِلًا فَبَعِيرَيْنِ وَإِنْ كَانَت بقرة فبقرتين» . رَوَاهُ النَّسَائِيّ

Abu Dharr reported God's messenger as saying, “No Muslim will contribute a pair from every class of property he possesses to be devoted to God’s path without all the guards of paradise meeting him and summoning him to receive what they have.” Abu Dharr asked him what the nature of that would be, and he replied, “If they are camels there will be two, and if they are cows there will be two.” Nasa’i transmitted it.