By not meeting the representatives of the Hurriyat Conference in New Delhi, the prime minister had struck a bargain on Kashmir, Dawn online quoted Khan as saying.
Khan raised questions like if Sharif could meet Indian leaders in Delhi, then why could he not hold a meeting with those representing the Hurriyat Conference.
Earlier Sharif's National Security and Foreign Affairs Advisor Sartaj Aziz had said that Sharif's India trip for the inauguration of Modi was "in itself such a seismic event - the first time ever for a Pakistani leader - that it would have been unrealistic to expect any substantive breakthroughs".
Sharif met Modi May 27 for the bilateral talks.
The two leaders discussed about issues including cross-border terrorism and agreed that terrorism was an issue of mutual concern and that they needed to address all conflicts to end the distrust between the two sides.
The Kashmir issue was discussed but not substantially.
Sharif did not meet the Hurriyat leadership as it was a ceremonial visit to India, Aziz had said.