Union Government
(1) Supreme Court Judges receive salaries as Parliament determines by law (or as specified in the Second Schedule until then). (2) Judges are entitled to privileges, allowances, and leave/pension rights as Parliament determines - but these cannot be varied to a Judge's disadvantage after their appointment.
Judges' pay and benefits are set by Parliament, but with a key protection: once a judge is appointed, their salary, allowances, or pension terms cannot later be reduced to their disadvantage - protecting judicial independence by ensuring the government of the day cannot financially pressure sitting judges.
This is why even a major pay-scale change Parliament makes for future judges cannot be used to retroactively cut the pay or pension already promised to a judge who was appointed under the earlier, more generous terms.