Chand, Sharukh and Saleem came to Banzara Chowk in Vijay Nagar after offering Eid prayers.
The accused, identified as Babu Khan, asked them to pay Rs 20 fare for each one, on which they demanded a discount of 50 per cent. This led to a heated argument and Babu Khan, his son along with staff, allegedly stabbed them, City Superintendent of Police Salman Taj Patil said.
They have been referred to GTB Hospital in Delhi for treatment, he said.