The Supreme Court has directed states with remission policies to consider the premature release of prisoners even if they don’t apply for remission beforehand.
With the exceptions for certain kinds of convicts, states are empowered to release prisoners before the completion of their sentence under the BNSS and the CrPC - 1973.
The power of remission refers to the power to reduce the period of a sentence for a person who has been found guilty of a crime.
Section 473 of the BNSS (and Section 432 of the CrPC) grants state governments the power to remit sentences “at any time”.
The states also may cancel the remission granted and arrest the convict again without a warrant.
This is separate from the power of the President and the Governor to remit the sentences under Articles 72 and 161 of the Constitution respectively.