Salam. Agha i want to know something about shahbaz qalandar who was he why do some shia believe in him so much he seems like some peer wassalam

He was Moosavi syed in the progeny of Ibrahim Mujab Ibne Musa Al kazim as the one who is buried in Karbala near the Zareeh of Imam Husain as. He was a renown pious scholar who propagated teaching Ahlul bait as in this part of the world.