Zakia Jafri had challenged the clean chit given by the Special Investigation Team (SIT) to Modi.
Modi tweeted: "Satyamev Jayate! Truth alone triumphs."
Quoting Mahatma Gandhi, Modi later tweeted: "Truth by nature is self-evident. As soon as you remove the cobwebs of ignorance that surround it, it shines clear."
The court on Thursday accepted the clean chit given to Modi by SIT in the 2002 riots case in the state
Following the court's decision, she told NDTV that she was saddened but not disheartened.
Her lawyer has reportedly said that they will contest the decision of the Ahmedabad court within a month.
In April, former Congress MP Ehsan Jafri's wife Zakia Jafri filed a protest petition in a Gujarat court against the SIT's closure report on the Gulbarg Housing Society massacre case.
The SIT report in the 2002 riots cases concerning the Gulbarg Society killings did not find any prosecutable evidence against Modi and 61 others.
The Supreme Court in February had allowed Zakia Jafri to file a fresh protest petition.
Zakia, the main petitioner in the Gulbarg Housing Society case, earlier said the Supreme Court appointed SIT gave her an incomplete copy of its closure report on the 2002 massacre.
She alleged around 20 pages of the closure report are missing from the copy that was handed over to her on May 7 last year.
An Ahmedabad court in April last year directed that Zakia Jafri should be given within a month a copy of the final report of the SIT on the Gulbarg Housing Society massacre in which her husband and Congress leader Ehsan Jafri was burnt to death.
The infamous Gujarat riots of 2002 left hundreds of Muslims dead, injured and tortured and came as a blot in the Bharatiya Janata Party (BJP) rule in the state.
The riots followed an incident of train burning in Godhra in which Hindus returning from Ayodhya were killed by a Muslim mob.
--IBNS (Posted on 26-12-2013)