Little is known about the city's history prior to the Arab invasion in the 8th century CE. Aror was the capital of the Ror Dynasty, which was followed by Rai Dynasty and then the Brahman Dynasty that once ruled northern Sindh.
Aror is the ancestral town of the Ror Community. In 711, Aror was captured by the army of Muslim general Muhammad bin Qasim. Arab historians recorded the city's name as Al-rur, Al-ruhr and Al Ror.
In 962 it was hit by a massive earthquake that changed the course of the Indus River and ruined the town's mud brick building, thereby setting into play the city's decline, and eventual re-settlement at Rohri, along the modern-day shores of the Indus.
Most of Aror's ruins have been lost, though some arches of a mosque built shortly after the 8th century Arab invasion remain standing. A Hindu temple dedicated to Kalkaan Devi still exists near the ruins, and are still used. The Chattan Shah ji Takri shrine is built atop a high rock outside the city, and is traditionally believed to be a companion of Ali, cousin of the Prophet Muhammad.
The Arora or Rora is a community of traders of the south-western part of the Punjab. Their origin according to the Bhavishya Purana, can be traced back to the time of Parshuram, who in anger started killing the Kshatriyas. In this process, Parshuram met a Kshatriya who refused to oppose the Brahmans, and winning Parshuram's respect, was asked to go to Sindh to setde there. Later, the place came to be known as Arutkot or Arorkot. His progeny are called Aroras.
The Aroras were also said to be the Khatris of Arorkot, or Aror, the ancient capital of Sindh.
Aror.--While at Rorhi, a visit may be paid to the very ancient town of Aor, which is only 5 m. distant to the E. This was the capital of the Hindu Rajas of Sindh and was taken from them by the Muslims, under Muhammad Kasim, about 711 A.D. At that time the Indus washed the city of Aror, but it was diverted from it by an earthquake about 962 A.D., at which the river entered its present channel.