It is stated in part 6, Surah Al-Maa’idah, verse 15:

قَدْ جَآءَكُمْ مِّنَ اللّٰهِ نُوْرٌ وَّ كِتٰبٌ مُّبِیْنٌۙ(۱۵)

Indeed, towards you has come a light from Allah (i.e. the Prophet Muhammad), and a Clear Book (i.e. the Qur'aan).

[Kanz-ul-Iman (translation of Quran)](Part. 6, Surah Al-Ma’idah, Verse 15)

It is stated in part 11, Surah Al-Taubah, verse 128:

لَقَدْ جَآءَكُمْ رَسُوْلٌ مِّنْ اَنْفُسِكُمْ عَزِیْزٌ عَلَیْهِ مَا عَنِتُّمْ حَرِیْصٌ عَلَیْكُمْ بِالْمُؤْمِنِیْنَ رَءُوْفٌ رَّحِیْمٌ(۱۲۸)

Indeed, there has come to you that Messenger from amongst yourselves; heavy upon him is your suffering, he immensely desires your wellbeing; utmost kind, merciful for the Muslims.

[Kanz-ul-Iman (translation of Quran)](Part. 11, Surah At-Taubah, Verse 128)

It is stated in part 17, Surah Al-Ambiya, verse 107:

وَ مَاۤ اَرْسَلْنٰكَ اِلَّا رَحْمَةً لِّلْعٰلَمِیْنَ(۱۰۷)

And We did not send you (O Beloved) but as a mercy for all the worlds.

[Kanz-ul-Iman (translation of Quran)](Part. 17, Surah Al-Ambiya, Verse 107)