Which article is related to Assent to Bills?

President’s Assent to Bills
Article 111 of the Constitution contains provisions for the President’s assent to bills. It means that when the Houses of Parliament have passed a bill, it will be brought to the President, who will announce whether he assents to the bill or not.

Veto Power of the President
Only the President’s assent is required for a bill enacted by Parliament to become an act. When a bill like this is offered to the President for his assent, he has three options (under Article 111 of the Constitution):

give his assent to the bill,
withhold his assent to the bill,
return the bill to Parliament for reconsideration (assuming it is not a Money Bill).
If the measure is passed by Parliament again, with or without revisions, and delivered to the President, the President is required to give his consent.
Assent to Ordinary Bill
There are three options available to the President in the case of an ordinary bill:
When he signs the bill, it becomes an act.
Withhold his assent: the bill will come to an end there and will not become an act.
Return the measure to the Houses for reconsideration: The Houses may make modifications to the bill or not and then return it to the President, who must then provide his assent.

Assent to Money Bill
A Money Bill may be given or withheld assent by the President. A Money Bill cannot be returned to the House by the President for reconsideration under the Indian Constitution.( here it doesn’t matter if rajya sbha agree to it or not ,they can only give recommendations to lok sbha and whether to accept it or not it's up to lol sbha it's still going to be passed with or without modification)

Assent to Constitutional Amendment Bill
The President must offer his or her consent to such measures.
He is unable to refund or withhold the bill (unlike ordinary bills).
After that, the measure becomes a Constitutional Amendment Act, which amends the Constitution in accordance with its provisions.