Sahih Bukhari Volume 9, Book 97, Hadith 7557

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الْوَهَّابِ، حَدَّثَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا أَيُّوبُ، عَنْ أَبِي قِلاَبَةَ، وَالْقَاسِمِ التَّمِيمِيِّ، عَنْ زَهْدَمٍ، قَالَ كَانَ بَيْنَ هَذَا الْحَىِّ مِنْ جُرْمٍ وَبَيْنَ الأَشْعَرِيِّينَ وُدٌّ وَإِخَاءٌ، فَكُنَّا عِنْدَ أَبِي مُوسَى الأَشْعَرِيِّ فَقُرِّبَ إِلَيْهِ الطَّعَامُ فِيهِ لَحْمُ دَجَاجٍ، وَعِنْدَهُ رَجُلٌ مِنْ بَنِي تَيْمِ اللَّهِ كَأَنَّهُ مِنَ الْمَوَالِي، فَدَعَاهُ إِلَيْهِ فَقَالَ إِنِّي رَأَيْتُهُ يَأْكُلُ شَيْئًا فَقَذِرْتُهُ، فَحَلَفْتُ لاَ آكُلُهُ‏.‏ فَقَالَ هَلُمَّ فَلأُحَدِّثْكَ عَنْ ذَاكَ، إِنِّي أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فِي نَفَرٍ مِنَ الأَشْعَرِيِّينَ نَسْتَحْمِلُهُ قَالَ ‏"‏ وَاللَّهِ لاَ أَحْمِلُكُمْ وَمَا عِنْدِي مَا أَحْمِلُكُمْ ‏"‏‏.‏ فَأُتِيَ النَّبِيُّ صلى الله عليه وسلم بِنَهْبِ إِبِلٍ فَسَأَلَ عَنَّا فَقَالَ ‏"‏ أَيْنَ النَّفَرُ الأَشْعَرِيُّونَ ‏"‏‏.‏ فَأَمَرَ لَنَا بِخَمْسِ ذَوْدٍ غُرِّ الذُّرَى، ثُمَّ انْطَلَقْنَا قُلْنَا مَا صَنَعْنَا حَلَفَ رَسُولُ اللَّهِ صلى الله عليه وسلم لاَ يَحْمِلُنَا، وَمَا عِنْدَهُ مَا يَحْمِلُنَا، ثُمَّ حَمَلَنَا، تَغَفَّلْنَا رَسُولَ اللَّهِ صلى الله عليه وسلم يَمِينَهُ، وَاللَّهِ لاَ نُفْلِحُ أَبَدًا، فَرَجَعْنَا إِلَيْهِ فَقُلْنَا لَهُ فَقَالَ ‏"‏ لَسْتُ أَنَا أَحْمِلُكُمْ، وَلَكِنَّ اللَّهَ حَمَلَكُمْ، إِنِّي وَاللَّهِ لاَ أَحْلِفُ عَلَى يَمِينٍ فَأَرَى غَيْرَهَا خَيْرًا مِنْهَا، إِلاَّ أَتَيْتُ الَّذِي هُوَ خَيْرٌ مِنْهُ، وَتَحَلَّلْتُهَا ‏"

Narrated By Zahdam : There were good relations and brotherhood between this tribe of Jurm and the Ash'ariyyin. Once, while we were sitting with Abu Musa Al-Ash'ari, there was brought to him a meal which contained chicken meat, and there was sitting beside him, a man from the tribe of Bani Taimul-lah who looked like one of the Mawali. Abu Musa invited the man to eat but the man said, "I have seen chicken eating some dirty things, and I have taken an oath not to eat chicken." Abu Musa said to him, "Come along, let me tell you something in this regard. Once I went to the Prophet with a few men from Ash'ariyyin and we asked him for mounts. The Prophet said, By Allah, I will not mount you on anything; besides I do not have anything to mount you on.' Then a few camels from the war booty were brought to the Prophet, and he asked about us, saying, 'Where are the group of Ash'ariyyin?' So he ordered for five fat camels to be given to us and then we set out. We said, 'What have we done? Allah's Apostle took an oath that he would not give us anything to ride and that he had nothing for us to ride, yet he provided us with mounts. We made Allah's Apostle forget his oath! By Allah, we will never be successful.' So we returned to him and reminded him of his oath. He said, 'I have not provided you with the mount, but Allah has done so. By Allah, I may take an oath to do something, but on finding something else which is better, I do that which is better and make the expiation for my oath.'"