He is talking about some bandits who used to raid arab trading ships. He is also talking about Buddhists who betrayed Raja Dahir. Do you know who they were ? They were Jats , Jats were some of the first tribe who converted to Islam. They came in support of Muhammad Bin Qassem and fought alongside his Army against Raja Dahir. Buddhist Jats converted to Islam and joined the Ranks of Muhammad Bin Qassem's Army. Those Jats who didn't want to accept Islam or loyal to Raja Dahir migrated to present day Rajasthan, Haryana Punjab and Western UP after the death of Raja Dahir. Raja Dahir's Army also consists of some Jats. Something similar happened in first battle of Panipat, Babur was planning to invade India. Sidhu Jat King Sanghar was waiting for him to join with his 3000 men. They both marched towards Delhi together and met with resistance from Ibrahim Lodhi's army at Panipat. Sidhu Jat King Sanghar and his Sidhu Jat soldiers fought alongside Babur's Army against Ibrahim Lodhi's army and most of Sidhu Jat soldiers were Killed in Action and Sidhu Jat King Sanghar killed while fighting on 21st April 1526 in first Battle of Panipat. King Sanghar was ancestor of present day Royal family of Patiala. Captain Amrinder Singh (Sidhu) the Pitalia Maharaj is descendent of King Sanghar. The origin of Sidhu Clan is also interesting which I will tell you in brief later on History thread , Sidhu's basically descended from Raja Jaisal Singh Bhati of Jaisalmer a Rajput King. Raja Jaisal Singh Bhati is earliest recorded ancestor of Captain Amrinder Singh (Sidhu).Yes, Jaisal Singh Bhati is an ancestor of the Sidhu Jats:
Jaisal Singh Bhati: Jaisal Singh Bhati was a descendant of Rao Bhatti, a Hindu monarch from the 3rd century who was the common ancestor of the Bhati Rajput clan.
Jaisal: Jaisal was a Bhatti Rajput who founded Jaisalmer.
Khiwa: Khiwa was a descendant of Jaisal who married a Jat woman and had Sidhu, the ancestor of the Sidhu tribe.
Sidhu: The Sidhu are a major Jat tribe and the name Sidhu comes from the Sanskrit word siddha which means "accomplished".
Patiala rulers: The rulers of Patiala have claimed to be descendants of Jaisal Bhati. Bitter truth of History defenders of India betrayed India and Dharm , I should say India is a factory of gaddars.