How can one deal with a colleague who doubts the existence of God and the prophethood of the Prophet (peace be upon him), and requests a rational proof for the existence of God?

The Mufti refers to previous fatwas to answer the questioner's inquiries, describing the questioner's statement that he can claim prophethood as trivial and indicative of his weak intellect. He emphasizes that prophethood is a divine selection, and that discerning the truthfulness of a claimant to prophethood from a liar relies on weighty matters. He warns the female questioner that it is impermissible to interact with a non-mahram man except out of necessity and to the extent of that necessity, while adhering to Islamic manners.