Can you explain the reduction of salary for Judges mentioned in this text?
The reduction of salary for Judges mentioned in this text is based on the pensions they might be receiving from their previous service under the Government of India or any of its predecessor Governments, or under the Government of a State or any of its predecessor Governments. 

The text mentions that if a Judge of the Supreme Court at the time of his appointment is in receipt of a pension (other than a disability or wound pension) in respect of any previous service, his salary in respect of service in the Supreme Court will be reduced by the amount of that pension. Additionally, if he has received commuted value of a portion of the pension due to him in respect of such previous service before his appointment, the salary would also be reduced by the amount of that portion of the pension. Finally, if he has received a retirement gratuity in respect of such previous service, the salary would be reduced by the pension equivalent of that gratuity.