A bedouin gave the Pledge of allegiance to Messenger of Allah ﷺ for Islam and the bedouin got a fever where upon he said to the Prophet ﷺ "Cancel my Pledge." But the Prophet ﷺ refused. He came to him (again) saying, "Cancel my Pledge.' But the Prophet ﷺ refused. Then (the bedouin) left (Medina). Allah's Apostle said: "Medina is like a pair of bellows (furnace): It expels its impurities and brightens and clears its good."  

أَنَّ أَعْرَابِيًّا بَايَعَ رَسُولَ اللَّهِ ﷺ عَلَى الإِسْلاَمِ فَأَصَابَهُ وَعْكٌ فَقَالَ أَقِلْنِي بَيْعَتِي فَأَبَى ثُمَّ جَاءَهُ فَقَالَ أَقِلْنِي بَيْعَتِي فَأَبَى فَخَرَجَ فَقَالَ رَسُولُ اللَّهِ ﷺ الْمَدِينَةُ كَالْكِيرِ تَنْفِي خَبَثَهَا وَيَنْصَعُ طِيبُهَا  

A bedouin came to the Prophet ﷺ and said, "Please take my Pledge of allegiance for Islam." So the Prophet took from him the Pledge of allegiance for Islam. He came the next day with a fever and said to the Prophet ﷺ "Cancel my pledge." But the Prophet ﷺ refused and when the bedouin went away, the Prophet said, "Medina is like a pair of bellows (furnace): It expels its impurities and brightens and clears its good."  

جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ ﷺ فَقَالَ بَايِعْنِي عَلَى الإِسْلاَمِ فَبَايَعَهُ عَلَى الإِسْلاَمِ ثُمَّ جَاءَ الْغَدَ مَحْمُومًا فَقَالَ أَقِلْنِي فَأَبَى فَلَمَّا وَلَّى قَالَ الْمَدِينَةُ كَالْكِيرِ تَنْفِي خَبَثَهَا وَيَنْصَعُ طِيبُهَا  

[Machine] An Arab came to the Messenger of Allah ﷺ and said, "Give me your pledge of allegiance on Islam." So he gave him his pledge of allegiance on Islam. Then, on the next day, the Arab came while in a state of distress and said, "O Messenger of Allah, let me go." But he refused. Then, on the following day, the Arab came again while in a state of distress and said, "Let me go." But he refused. When he left, the Messenger of Allah ﷺ said, "The city (Medina) is like a furnace, it expels its impurities and keeps its good."  

جَاءَ أَعْرَابِيٌّ إِلَى رَسُولِ اللهِ ﷺ فَقَالَ بَايِعْنِي عَلَى الْإِسْلَامِ فَبَايَعَهُ عَلَى الْإِسْلَامِ ثُمَّ جَاءَ مِنَ الْغَدِ مَحْمُومًا فَقَالَ يَا رَسُولَ اللهِ أَقِلْنِي فَأَبَى ثُمَّ جَاءَ مِنَ الْغَدِ مَحْمُومًا فَقَالَ أَقِلْنِي فَأَبَى فَلَمَّا وَلَّى قَالَ الْمَدِينَةُ كَالْكِيرِ تَنْفِي خَبَثَهَا وَيَنْصَعُ طَيِّبَهَا  

[Machine] An Arab came to the Prophet ﷺ and pledged allegiance to him on Islam. The next day he came, looking disheveled, and said, "O Messenger of Allah, give me some of your wealth." The Prophet refused. He came to him for three consecutive days, each time saying, "O Messenger of Allah, give me some of your wealth," and each time the Prophet ﷺ refused. When he left, the Prophet ﷺ said, "Verily, Medina is like a furnace that purifies its impure and retains its good."  

جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ ﷺ فَبَايَعَهُ عَلَىالْإِسْلَامِ فَجَاءَ مِنَ الْغَدِ مَحْمُومًا فَقَالَ يَا رَسُولَ اللهِ أَقِلْنِي فَأَبَى فَجَاءَهُ ثَلَاثَةَ أَيَّامٍ مُتَوَالِيَةٍ كُلُّ ذَلِكَ يَقُولُ يَا رَسُولَ اللهِ أَقِلْنِي فَيَأْبَى النَّبِيُّ ﷺ فَلَمَّا وَلَّى قَالَ النَّبِيُّ ﷺ إِنَّ الْمَدِينَةَ كَالْكِيرِ تَنْفِي خَبَثَهَا وَيَنْصَعُ طَيِّبَهَا  

A bedouin came to the Prophet ﷺ and gave a pledge of allegiance for embracing Islam. The next day he came with fever and said (to the Prophet ﷺ ), "Please cancel my pledge (of embracing Islam and of emigrating to Medina)." The Prophet ﷺ refused (that request) three times and said, "Medina is like a furnace, it expels out the impurities (bad persons) and selects the good ones and makes them perfect." (Using translation from Bukhārī 1883)   

جَاءَ رَجُلٌ إِلَى النَّبِيِّ ﷺ فَبَايَعَهُ عَلَى الْإِسْلَامِ فَجَاءَ مِنَ الْغَدِ مَحْمُومًا فَقَالَ أَقِلْنِي ثَلَاثَ مَرَّاتٍ فَقَالَ رَسُولُ اللهِ ﷺ «الْمَدِينَةُ كَالْكِيرِ تَنْفِي خَبَثَهَا وَيَنْصَعُ طِيبُهَا»  

" جَاءَ أَعْرَابِىٌّ إِلَى النَّبِىِّ ﷺ فَبَايَعَهُ عَلَى الإِسْلاَمِ، فَجَاءَ مِنَ الْغَدِ مَحْمُومًا فَقَالَ: يَارَسُولَ الله أَقِلْنِى، فَأَبِى النَّبِىُّ ﷺ فَجَاءَهُ ثَلاَثَةَ أَيَّامٍ كُلَّ ذَلِكَ يَقُولُ: يَارَسُولَ الله! أَقِلْنِى بَيْعَتِى، فَأبَى النَّبِىُّ ﷺ فَلَمَّا وَلَّى قَالَ: النَّبِىُّ ﷺ : إِنَّ الْمَدِينَةَ كَالْكِيرِ تَنْفِى خَبَثَهَا وَتَنْصَعُ (*) طَيِّبَهَا ".