7:21

Al-A'raaf 7:21

وَقَاسَمَهُمَآ إِنِّى لَكُمَا لَمِنَ ٱلنَّٰصِحِينَ

Wa qaasamahumaaa innee lakumaa laminan naasiheen

And he swore to them both, that he was their sincere adviser.