Malik Ibrahim Bayu  Malik Ibrahim Bayu was a legendary Sufi saint-warrior who arrived in South Bihar in the 14th century and defeated the tribal Kol chiefdoms who had been oppressing the local Muslims. Much of what is known about Malik Ibrahim Bayu comes from local legends in South Bihar and from inscriptions found in Bihar Sharif. he arrived in Bihar and fought a protracted struggle against the adivasi Kol tribe. The tomb of Malik Ibrahim Bayu is located on Pir Pahar hill in Nalanda district. The Mujawirs who are the custodians of the tomb detail that Bayu was entrusted by Sultan Muhammad bin Tughluq with the task of subduing Raja Han skumar and Harikumar. Bayu was victorious but was killed later one night while he was out of the Fort after the battle.