"This took place at a national monument in Pakistan, in which a large amount of police were deployed, it was advertised all across Pakistan and was an event by an organisation proscribed by us, the United Nations, the USA," said foreign ministry spokesperson Syed Akbaruddin, also pointing out "it was addressed by an individual designated as a terrorist by the UN."
New Delhi has said that support for the rally in Pakistan is blatant disregard of international norms against terrorism.
Mr Akbaruddin said "even train services were given" in a reference to reports that Pakistan Railways operated trains from Hyderabad in the Sindh province and from Karachi for the meet.
Thousands attended the two-day congregation organised by Saeed's Jaamat-ud-Dawa at the historical Minar-e-Pakistan in Lahore that began yesterday.
Hafiz Saeed, who made inflammatory speeches at the meet, is high on India's list of most wanted. New Delhi accuses him of being the mastermind behind the Mumbai terror attacks in November 2008, the conspiracy for which was hatched, planned and executed out of Pakistan. 166 people were killed in the terror strike.
Pakistan has said that there is no case against Hafiz Saeed and that he is free to roam the country as a Pakistani national.
Earlier this year, the US had added the Jamaat-ud-Dawa to its list of designated terror organisations.