حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ، عَنْ يَزِيدَ بْنَ أَبِي حَبِيبٍ، عَنْ مُسْلِمِ بْنِ جُبَيْرٍ، عَنْ أَبِي سُفْيَانَ، عَنْ عَمْرِو بْنِ حَرِيشٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم أَمَرَهُ أَنْ يُجَهِّزَ جَيْشًا فَنَفِدَتِ الإِبِلُ فَأَمَرَهُ أَنْ يَأْخُذَ فِي قِلاَصِ الصَّدَقَةِ فَكَانَ يَأْخُذُ الْبَعِيرَ بِالْبَعِيرَيْنِ إِلَى إِبِلِ الصَّدَقَةِ ‏.‏

Narrated Abdullah ibn Amr ibn al-'As: The Messenger of Allah (PBUH) commanded him to equip an army, but the camels were insufficient. So he commanded him to keep back the young camels of sadaqah, and he was taking a camel to be replaced by two when the camels of sadaqah came. Translation Not Available

Book Ref: Sunan Abi Dawud Book 23 Hadith 3357
Web Ref:  Sunan Abi Dawud Book 22 Hadith 3351