1. إِذا وَعَدتَ فَبادِرْ بِالوَفاءِ وَلا

    تَمطُلْ بِوَعدٍ فَلَيسَ المَطلُ مَقبولا

    When you make a promise, hasten to fulfill it, and do not

    delay fulfilling a promise, for delay is unacceptable.

  2. فَأَحسَنُ الوعدِ ما قَد كُنتَ مُنجِزَهُ

    وَأَقبحُ الوعدِ ما قَد كانَ مَمطولا

    For the best promise is one you have fulfilled,

    and the worst promise is one whose fulfillment has been delayed.