Sahih Muslim Book - 15, Hadith - 3355

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ أَنَّ أَعْرَابِيًّا بَايَعَ رَسُولَ اللَّهِ -صلى الله عليه وسلم- فَأَصَابَ الأَعْرَابِىَّ وَعَكٌ بِالْمَدِينَةِ فَأَتَى النَّبِىَّ -صلى الله عليه وسلم- فَقَالَ يَا مُحَمَّدُ أَقِلْنِى بَيْعَتِى. فَأَبَى رَسُولُ اللَّهِ -صلى الله عليه وسلم- ثُمَّ جَاءَهُ فَقَالَ أَقِلْنِى بَيْعَتِى. فَأَبَى ثُمَّ جَاءَهُ فَقَالَ أَقِلْنِى بَيْعَتِى. فَأَبَى فَخَرَجَ الأَعْرَابِىُّ فَقَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « إِنَّمَا الْمَدِينَةُ كَالْكِيرِ تَنْفِى خَبَثَهَا وَيَنْصَعُ طَيِّبُهَا ».

It was narrated from Jabir bin Abdullah that a Bedouin pledged allegiance to the Messenger of Allah (SAW) then the Bedouin suffered a severe fever in Al-Madinah. He came to the Prophet (S.A.W) and said: “O Muhammad, cancel my oath of allegiance,” but the Prophet (SAW) refused to do so. He came (a second time and) said: “O Muhammad, cancel my oath of allegiance,” but the Messenger of Allah (SAW) refused to do so. Then he came to him (a third time) and said: “Cancel my oath of allegiance,” but he refused. Then he came to him (another time) and said: “O Muhammad, cancel my oath of allegiance,” but he refused. The Bedouin departed (left Al-Madinah) and the Messenger of Allah said: “Al-Madinah is like a bellows, it eliminates its impurities and purifies what is good.”