Allah says in surah Aal ‘Imran: فَإِنْ حَاجُّوكَ فَقُلْ أَسْلَمْتُ وَجْهِيَ لِلَّـهِ وَمَنِ اتَّبَعَنِ ۗ وَقُل لِّلَّذِينَ أُوتُوا الْكِتَابَ …

The Prophet Muhammad was Sent to All Mankind: Tafsir ibn Kathir