Before his succession to the throne, Abu Bakr attempted to seize power by rebelling in Shiraz against his father during the latter's conflict with two princes of the Khwarazmian Empire.

[2][1] On 12 November 1230, Abu Bakr captured the Kish Island, thus giving him access to the trade between the Persian Gulf and India, where he could enforce dues on it.

[1][2] Sa'd II thus succeeded him, but died en route at Tafresh due to illness after ruling for twelve or eighteen days.

[4] During this period, culture flourished in Fars; Abu Bakr ordered the construction of many hospitals and high-level religious establishments which attracted many scholars.

[5] According to local traditions, Abu Bakr's minister Amir Muqarrab al-Din Mas'ud discovered the burial place of Ahmad, a brother of the eight Imam Ali al-Ridha (died 818).