Final answer:
The historian Abu Bakr Muhammad ibn Jafar Narshakhi described how Bukhara was conquered by Qutaiba ibn Muslim during the reign of Mu'awiya. He also mentioned the existence of a fire temple that was later replaced by a mosque by the Muslims.
Step-by-step explanation:
Abu Bakr Muhammad ibn Jafar Narshakhi is considered to be the first historian in Central Asia. In his History of Bukhara, he states that during the reign of Mu'awiya, Qutaiba ibn Muslim conquered Bukhara. In Bukhara, there was a bazaar called the bazaar of Makh. Twice a year for one day, there was a fair where people would gather, enter the fire temple, and worship fire. However, when the Muslims seized power, they built a mosque on the site where the fire temple used to be.