The accused, Mohsin Ahmed Idrisiya, was arrested yesterday evening for stabbing to death his brother Firoz (28) following a dispute over taking work order, police said.
On Sunday night, Firoz, also a tailor, told Mohsin not to take work order from Dharavi area saying that payment was always delayed by the clients there.
However, Mohsin disagreed with him saying that they were going through a bad phase in business and rejecting work order from Dharavi would prove costly.
As the argument turned violent, Mohsin stabbed his brother with a pair of scissors and fled the spot, police said
He was nabbed from Mankhurd area last evening.
The weapon used in the crime was also seized, police said adding that a probe was on in the case.