﴿ قُلْ كَفَىٰ بِٱللَّهِ بَيْنِى وَبَيْنَكُمْ شَهِيدًۭا ۖ يَعْلَمُ مَا فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۗ وَٱلَّذِينَ ءَامَنُوا۟ بِٱلْبَٰطِلِ وَكَفَرُوا۟ بِٱللَّهِ أُو۟لَٰٓئِكَ هُمُ ٱلْخَٰسِرُونَ ﴾

“Say [unto those who will not believe]: “God is witness enough between me and you! He knows all that is in the heavens and on earth; and they who are bent on believing in what is false and vain, and thus on denying God - it is they, they who shall be the losers!””

People used to raise the objection that the Prophet Muhammad had not been given signs of God such as had been given to others, such as Moses, God’s answer to them was that signs or miracles were matters pertaining to Him and not to the prophets. The real support of the Prophet’s call of Truth are the sound arguments. Owing to certain considerations, God sometimes does give His signs or miracles to a prophet, but sometimes He does not. Faith is a conscious experience. Faith finds its place in a man’s heart once he is convinced by arguments in its favour. One who accepts something after testing it in the light of arguments is a protagonist of Truth, and one who indulges in irrelevant discussions is a worshipper of falsehood.