In 1633, the Omanis, led by Nasir bin Murshid attacked the two fortresses at Julfar (modern-day Ras Al Khaimah) one held by Persians and the other by Portuguese.

The imam had two objectives: one was to unite Oman into a single country and end the civil wars, the second was to get rid of the Portuguese hegemony that held the coastal cities.

However, after the enthronement, many Omani tribes began revolting against him, and he focused his efforts on subduing the rebels, beginning from 1624 to 1630.

Mani' went to Muscat, so Nasir prepared an army against him led by Mas'ud bin Ramadan and went to a place called Tuwa al-Rowla close to Muttrah, where he met a Portuguese force and successfully routed them.

[9] The Persian loss of Julfar encouraged them to make a compromise with the English over capturing Muscat, but plans fell through in March 1633 when the governor of Shiraz was executed by Shah Safi.