"Kashmir was main cause of unrest in the region and India must show seriousness for resolution of the issue and honour its commitment under United Nations Security Council Resolutions," Sharif was quoted as saying by Associated Press of Pakistan.
Pakistan was committed to peaceful resolution of the Kashmir issue, he said.
Sharif dismissed India's allegations that Pakistan was behind the attack on an Indian army base camp in Uri, saying India levelled allegations against Pakistan within six hours of the incident.
He said no infiltration took place across the Line of Control (LoC).
Sharif's statement comes amid strains in the relations between Pakistan and India in the wake of the Uri terror attack in which 19 Indian soldiers were killed last month.
(Reopens FGN 9)
Meanwhile in an informal chat with reporters in Baku, Sharif said he was "deeply moved" by the "sentiments" of Hizbul Mujahideen commander Burhan Wani's father, Muzaffar Wani.
"To a query, he replied that he was deeply moved by the sentiments of the father of Burhan Wani," Sharif's office said in a statement here.
It was not clear which "sentiments" Sharif was referring to, but Muzaffar Wani has previously said he wants India and Pakistan to resolve the Kashmir issue through dialogue and that his son was "forced" to become a terrorist.
Sharif has often mentioned Burhan Wani in his speeches and called him a "freedom fighter" since the Hizbul commander's death on July 8 that led to unrest and violence in the Valley.
Sharif said Pakistan was committed to peaceful resolution of the Kashmir issue and "regretted" India's allegations that Pakistan-backed militants were behind the Uri terror attack on September 18 on an Indian army base that killed 19 soldiers.