Ibrahim Adil Shah II was the Adil Shahi sultan of the Sultanate of Bijapur from 1580 to 1627. Under his reign the sultanate had its greatest period as he extended its frontier as far south as Mysore. He was a skilful administrator, artist, poet and a generous patron of the arts. He reverted to the Sunni orthodoxy of Islam, but remained tolerant of other religions, including Christianity. However, during his reign high-ranking Shiite immigrants became unwelcome and in 1590, he ordered the confinement of criers who read the khutba in the Shia form. The Adil Shahis under his rule left a tradition of cosmopolitan culture and artistic patronage whose architectural remains are to be seen in the capital city of Bijapur.