It is narrated from Sayyiduna Zaid bin Thabit (may Allah be pleased with him) that when the Noble Prophet (peace and blessings be upon him) set out towards Uhud, the hypocrites who had set out with him turned back from the way. Because of them, the Companions were divided into two groups: one group thought that we should fight these hypocrites, while the other group was of the opinion that they should not be fought. Then this verse was revealed: {فَمَا لَکُمْ فِی الْمُنَافِقِینَ فِئَتَیْنِ وَاللّٰہُ أَ رْکَسَہُمْ بِمَا کَسَبُوْا۔} … Then what is [the matter] with you [that you are] two groups concerning the hypocrites, while Allah has made them revert because of what they earned. Then the Prophet (peace and blessings be upon him) said: This (city) is Tayyibah; it purifies sins just as fire removes the impurities of silver.