Do not those who disbelieve see that the heavens and the earth were closed up, but We have opened them; and We have made of water everything living, will they not then believe?

Certainly Allah had shown to His Messenger the vision with truth: you shall most certainly enter the Sacred Mosque, if Allah pleases, in security, (some) having their heads shaved and (others) having their hair cut, you shall not fear, but He knows what you do not know, so He brought about a near victory before that.