39:12
وَأُمِرْتُ لِأَنْ أَكُونَ أَوَّلَ ٱلْمُسْلِمِينَ ١٢
Saheeh International
And I have been commanded to be the first [among you] of the Muslims."
Tafsir of "Ibn Kathir" (English)
And I am commanded (this) in order that I may be the first of the Muslims.