Sahih Muslim Book - 33, Hadith - 4907

وحَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ عَنْ يَزِيدَ بْنِ أَبِي سَعِيدٍ مَوْلَى الْمَهْرِيِّ عَنْ أَبِيهِ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَعَثَ إِلَى بَنِي لَحْيَانَ لِيَخْرُجْ مِنْ كُلِّ رَجُلَيْنِ رَجُلٌ ثُمَّ قَالَ لِلْقَاعِدِ أَيُّكُمْ خَلَفَ الْخَارِجَ فِي أَهْلِهِ وَمَالِهِ بِخَيْرٍ كَانَ لَهُ مِثْلُ نِصْفِ أَجْرِ الْخَارِجِ.

It was narrated from Yazid bin Abi Sa'eed, the freed slave of Al-Mahri, from his father, from Abu Sa'eed Al-Khudri, that the Messenger of Allah (s.a.w) sent a troop to Banu Lihyan and said: "Let one man out of every two go out," then he said to those who stayed behind: "Whichever of you stays behind and looks after the family and property of the one who goes out, will have half of the reward of the one who goes out."