What is the process for referring matters to a Public Service Commission according to this rule?
The process for referring matters to a Public Service Commission according to this rule is as follows:

1. On any claim by or in respect of a person who is serving or has served under the Government of India or the Government of a State or under the Crown in India or under the Government of an Indian State, in a civil capacity, that any costs incurred by him in defending legal proceedings instituted against him in respect of acts done or purporting to be done in the execution of his duty should be paid out of the Consolidated Fund of India, or, as the case may be, out of the Consolidated Fund of the State.

2. On any claim for the award of a pension in respect of injuries sustained by a person while serving under the Government of India or the Government of a State or under the Crown in India or under the Government of an Indian State, in a civil capacity, and any question as to the amount of any such award.

In these cases, it shall be the duty of a Public Service Commission to advise on any matter so referred to them and on any other matter which the President, or, as the case may be, the Governor, may refer to them. However, the President and the Governor can make regulations specifying the matters in which it shall not be necessary for a Public Service Commission to be consulted.