During the sermon Mufti-e-Azam Sheikh Abdul Aziz bin Sheikh urged Muslims to set aside their differences, adding that there was no association between terrorism and Islam.
The hajj sermon was delivered by Mufti-e-Azam Saudi Arabia, Sheikh Abdul Aziz bin Sheikh at Masjid-e-Nimra.
The Mufti also reminded Muslims that suicide haram (against Islam) and those who commit it will not be forgiven.
While addressing the pilgrims, Mufti-e-Azam added that all Muslims should become one economic force and focus on science and technology.
He further said that the Islamic system of governance was better than a fake democracy. Political problems can be solved through dialogue, he said.
The Mufti urged pilgrims to respect all nations and highlighted that blasphemy would not be tolerated. He also called upon all Muslims to unite and help each other.
Earlier, pilgrims performed the most vital pillar of Hajj, Wuquf-e-Arafat (Stay at Mount Arafat).
Hundreds of thousands of Hajj pilgrims, after overnight stay in Mina, started their journey to Mount Arafat after Fajr prayers.
The world’s largest annual pilgrimage, the Hajj, began on Wednesday with hundreds of thousands of Muslims pouring into the camp of Mina from Makkah to prepare for the rituals.
The pilgrims are estimated to total up to 2.5 million this year.
At Mount Arafat, around 14 kilometres southeast of Mina, the pilgrims will spend the day in prayer and reflection.
After sunset, they will move on to Muzdalifah, halfway between Mount Arafat and Mina, where they spend the night.