Hadith: While we were on a journey with the Prophet (may Allah's peace and blessings be upon him) a man came while riding a mount of his

عن أبي سعيد الخدري رضي الله عنه قال: بينما نحن في سفرٍ مع النبيِّ صلى الله عليه وسلم إذ جاء رجلٌ على رَاحِلةٍ له، فجعلَ يَصرِفُ بصرَه يمينًا وشمالًا، فقال رسولُ اللهِ صلى الله عليه وسلم : "من كان معه فَضْلُ ظَهرٍ فَليَعُدْ به على من لا ظَهرَ له، ومن كان له فضلٌ من زادٍ، فَليَعُدْ به على من لا زادَ له"، فذكرَ من أصنافِ المالِ ما ذكر حتى رأينا أنه لا حقَّ لأحدٍ منَّا في فضلٍ.
[صحيح] - [رواه مسلم]

Abu Sa‘īd al-Khudri (may Allah be pleased with him) reported: While we were on a journey with the Messenger of Allah (may Allah's peace and blessings be upon him) a man came while riding a mount of his, and he began to look on the right and left. The Messenger of Allah (may Allah's peace and blessings be upon him) said: "The one who has an extra mount should hand it over to one who has no mount, and the one who possesses surplus provision should give it to the one who has no provision." He named various kinds of properties until we began to think that none of us had any right to anything surplus.
Sahih/Authentic. - [Muslim]

Explanation

Abu Sa‘īd al-Khudri (may Allah be pleased with him) related that they had been on a journey with the Prophet (may Allah's peace and blessings be upon him). Meanwhile, a man came while riding a she-camel, and he was looking left and right in search of anything by which he could meet his need. Thereupon, the Prophet (may Allah's peace and blessings be upon him) instructed that anyone who had an extra mount should donate it to those who had no mount and anyone who had surplus food should give it to those who had no food. Then the narrator added: "Till we thought that no one of us was entitled to anything beyond his needs."