Sahih Muslim 1649g
Abu Musa al-Ash'ari reported: We came to Messenger of Allah ﷺ requesting him to provide us with riding camels. He (the Holy Prophet) said: There is nothing with me with which I should equip you. By Allah, I would not provide you with (riding camels). Then Messenger of Allah ﷺ sent to us three camels with spotted bumps. We said: We came to Messenger of Allah ﷺ asking him to equip us with riding animals. He took an oath that he could not equip us. We came to him and informed him. He said: By Allah, I do not take an oath, but when I find the other thing better than that, I do that which is better.
وَحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا جَرِيرٌ، عَنْ سُلَيْمَانَ التَّيْمِيِّ، عَنْ ضُرَيْبِ بْنِ، نُقَيْرٍ الْقَيْسِيِّ عَنْ زَهْدَمٍ، عَنْ أَبِي مُوسَى الأَشْعَرِيِّ، قَالَ أَتَيْنَا رَسُولَ اللَّهِ ﷺ نَسْتَحْمِلُهُ فَقَالَ " مَا عِنْدِي مَا أَحْمِلُكُمْ وَاللَّهِ مَا أَحْمِلُكُمْ " . ثُمَّ بَعَثَ إِلَيْنَا رَسُولُ اللَّهِ ﷺ بِثَلاَثَةِ ذَوْدٍ بُقْعِ الذُّرَى فَقُلْنَا إِنَّا أَتَيْنَا رَسُولَ اللَّهِ ﷺ نَسْتَحْمِلُهُ فَحَلَفَ أَنْ لاَ يَحْمِلَنَا فَأَتَيْنَاهُ فَأَخْبَرْنَاهُ فَقَالَ " إِنِّي لاَ أَحْلِفُ عَلَى يَمِينٍ أَرَى غَيْرَهَا خَيْرًا مِنْهَا إِلاَّ أَتَيْتُ الَّذِي هُوَ خَيْرٌ " .