The Supreme Court has laid down the law that a Governor, in case he withholds assent, should send back a Bill forwarded to him by a State Legislature “as soon as possible” with a message to reconsider the proposed law.
In case, the State Assembly reiterates the Bill “with or without amendments”, the Governor has no choice or discretion, and has to give his assent to it.
Editorial | Unheeded advice: On the conduct of Governors