Khawaja Moinuddin was born in 1142 at Sajar in the territory of Sitistan (or Sistan) and died at Ajmer in 1236 AD. He took to the life of self imposed poverty (faqir) at the early age of fifteen when he was working in a garden which he had inherited from his father. A wandering darwish happened to come by it.
Mohnuddin offered some grapes to him and in return he took out a piece of spueezed bread from his bag and asked him to eat. It is stated that as he ate it a change came in him and he gave up the worldly life. He sold the garden and distributed among the poor all that he had.
He left his native town and started travelling from place to place. Completing his studies in Bukhara and Samarqand he proceeded toward Iraq. At Harun he met Khawaja Usman & got himself enrolled among his disciples.