وَلا خَيْرَ فِيمَنْ لا يُوَالِي عَلَى عَهْدٍ
وَلا خَيْرَ فِي وَعْدٍ إِذَا لَمْ يَكُنْ صِدْقًا
There is no good in one who does not maintain loyalty
And no good in a promise if it is not truthful
المصدر · Source: Diwan Hatim. Ed. A. al-Rashid