Bhagmati was so overwhelmed by Mohammad Quli’s love that she immediately converted to Islam and assumed the Muslim name Hyder Mahal. Mohammad Quli, not to be outdone, renamed his city Hyderabad or the ‘city of Hyder’. During Qutub Shahi dynasty, the city witnessed its golden age of architecture over-shadowing the city of Golconda.
Qutub Shahi dynasty declined...gave way to invading Mughals in 1687,...which marked the end of a great epoch in the history of South India....Chin Qilich Khan, one of Mughal’s ablest generals, ...appointed the Viceroy of the Deccan with the title “Nizam-ul-Mulk" (Regulator of the Realm).... He rebelled against the Mughals and was victorious on 16 January 1725... and with the city as the capital ruled his vast dominions.