A calf he was carrying in the car died in the mishap, while a bullock also in the car was rescued.
His brother Imran alleged he was beaten up on suspicion that he was transporting cows for slaughter.
To save himself Ayyub started running but he was caught and the attackers thrashed him.
An inspector of police said as he has died, they will file an FIR for murder and no arrest has been made.
The BJP ruled state was rocked by a huge controversy in July when some Dalit youths were flogged in public by cow vigilantes at Una.