Al-Mukhtasar
قُلْ يَـٰٓأَيُّهَا ٱلنَّاسُ إِن كُنتُمْ فِى شَكٍّ مِّن دِينِى فَلَآ أَعْبُدُ ٱلَّذِينَ تَعْبُدُونَ مِن دُونِ ٱللَّهِ وَلَـٰكِنْ أَعْبُدُ ٱللَّهَ ٱلَّذِى يَتَوَفَّىٰكُمْ ۖ وَأُمِرْتُ أَنْ أَكُونَ مِنَ ٱلْمُؤْمِنِينَ ﴿١٠٤﴾
Say, O Messenger: O people, if you are in doubt about my religion which I call you towards, the religion of monotheism, then I am certain of your religion being false and I will therefore not follow it. I will not worship those whom you worship besides Allah, but I will only worship Allah, the One Who will cause you to die. He has instructed me to be of those who are sincere to Him in religion.