«وَالْأَرْوَعُ يُثِيبُ وَالْمَعْوَرُ يَخِيبُ»
The splendid, commanding person rewards; the defective one disappoints.
Al-arwaʿ suggests a person admired for presence or distinction; al-maʿwar signals deficiency. The parallel verbs yuthīb / yakhīb contrast giving a recompense with leaving hope unfulfilled.
The contrast is not a neutral catalogue of people. It is part of a petitioner’s persuasive address: generosity becomes the mark of the noble person, and frustrated expectation the sign of his opposite.