فَلاَ تَتَهدَّد بالوَعِيدِ سَفَاهَةً

وأوْعِدْ شُنَيْفاً إنْ غَضِبْتَ وواقِمَا

So do not threaten foolishly with punishment,

But promise gently if you are angered, and be fair.