سورة Al-An'am ( The Cattle ) - الآية 19

Proclaim (O dear Prophet Mohammed – peace and blessings be upon him), “Whose testimony is the greatest?” Say, “Allah is the Witness between me and you; and this Qur’an has been sent down upon me, so I may warn you with it and whomever it may reach; so do you bear witness that there are other Gods along with Allah?” Say, “I do not bear witness to it”; Say, “He is the only One God and I do not have any relation with whatever you ascribe as partners (to Him).”