Say to them O Muhammad: "Is there anyone among your predominant partners whom you presume to share with Allah His divine nature, who can guide people into all truth!" Then say to them: Allah's spirit of truth guides to all truth, therefore, does He Who guides to all truth not merit to be followed, or he who cannot act as a guide and needs to be guided!" "What ails you people that you cannot apprehend mentally the difference nor arrive at a sound and correct Judgement."