Though details of their discussion was not known, Indian officials described it as a "social chitchat" between the ministers who were seated alongside.
The two ministers are also scheduled to hold a bilateral meeting here tomorrow which was sought by Aziz to extend the invitation for Prime Minister Narendra Modi for the SAARC summit, to be hosted by Pakistan later this year.
This is the second time the two ministers are meeting since December last when Swaraj had travelled to Islamabad for a multilateral meeting and had also held extensive bilateral talks with Aziz after which both countries announced resumption of the comprehensive bilateral dialogue.
Foreign Secretary S Jaishankar and his Pakistani counterpart Aizaz Ahmad Choudhry were also seen sitting together at another table during the dinner hosted by SAARC Secretary General Arjun Bahadur Thapa.