Say: 'Produce your proof, if you speak truly.

Say: 'Produce your proof, if you speak truly.' (2: 111) This was the reason that many Jews, Christians and those from other groups who took a stand against Islam, came to the Prophet or the pure Imams and sat down and discussed their religious ideas. Islam and the Invitation to Thought and Education Islam lends great value to thinking. It asks the learned and wise to think and think again about creation, time, night and day, the sky, the earth, animal life, man and the universe and what is in it.

Surely in the creation of the heavens and the earth and the alternation of night and day, and the ship that runs in the sea with profit to men, and the water Allah sends down from the sky therewith reviving the earth after it is dead, and His scattering abroad in it all manner of crawling thing, and the turning about of the winds and the clouds compelled between heaven and earth - surely there are signs for a people having understanding (2: 164) Also it asks them to research into the lives of those who came before, their thoughts…