Sahih al-Bukhari
Sahih al-Bukhari 7216
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ، سَمِعْتُ جَابِرًا، قَالَ جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ بَايِعْنِي عَلَى الإِسْلاَمِ. فَبَايَعَهُ عَلَى الإِسْلاَمِ، ثُمَّ جَاءَ الْغَدَ مَحْمُومًا فَقَالَ أَقِلْنِي. فَأَبَى، فَلَمَّا وَلَّى قَالَ " الْمَدِينَةُ كَالْكِيرِ، تَنْفِي خَبَثَهَا، وَيَنْصَعُ طِيبُهَا ".
Jābir said: A Bedouin came to the Prophet and said, “Accept my pledge to Islam.” He accepted his pledge to Islam. The next day the man came with a fever and said, “Release me.” The Prophet refused. When the man turned away, the Prophet said, “Medina is like a blacksmith’s bellows: it removes its impurities and makes its good pure.”
Translation notes
This version says the Bedouin returned the next day with a fever, asked to be released, and left after the Prophet refused.