Dr. Mustafa Khattab, the Clear Quran - Surah Al-A'raf, ayah 21

Translation of Surah Al-A'raf, ayah 21 (7:21)

وَقَاسَمَهُمَآ إِنِّي لَكُمَا لَمِنَ ٱلنَّٰصِحِينَ ٢١
And he swore to them, “I am truly your sincere advisor.”