«ثُمَّ بَسَطَ يَدَهُ بَعْدَ مَا أَنْشَدَهُ»
After reciting the poem, he extended his hand.
«أَنْجَزَ حُرٌّ مَا وَعَدَ، وَسَخَّ خَالٌ إِذْ رَعَدَ»
An honourable man has fulfilled his promise, just as a rain-cloud pours generously after it thunders.
«فَنَبَذْتُ الدِّينَارَ إِلَيْهِ وَقُلْتُ: خُذْهُ غَيْرَ مَأْسُوفٍ عَلَيْهِ»
So I tossed the dinar to him and said, Take it; I will not regret parting with it.
The narrator had made verse-composition the condition for the reward. The stranger fulfils that condition, and the narrator hands over the promised coin.