English translation
1883. Narrated Jābir رضي الله عنه: A bedouin came to the Prophet ﷺ and gave the Bai'a (pledge) for embracing Islām. The next day he came with fever and said (to the Prophet ﷺ), "Please cancel my pledge (of emigrating to Al-Madina)." The Prophet ﷺ refused (that request) three times and said, "Al-Madina is like a furnace, it expels out its Khabath" (the impurities - evil and bad persons etc.) and selects the good ones and makes them perfect."
