President Ram Nath Kovind on Wednesday night signed the ordinance banning the practice of instant triple talaq, a senior Law Ministry functionary said.
The ordinance was cleared by the Union Cabinet on Wednesday morning.
The government has said the measure was necessary as the practice of talaq-e-biddat was continuing unabated despite the Supreme Court last year striking it down.
Under the ordinance, giving instant triple talaq is illegal and void, and will attract a jail term of three years for the husband.
Seeking to allay fears that the proposed law could be misused, the government has included certain safeguards in it such as adding a provision of bail for the accused before trial.
These amendments were cleared by the Cabinet on August 29.