صَبْرُpatience الفَتَىthe young man مُصِيبَتِهِhis calamity إذَاwhen
صَبْرُ الفَتَى مُصِيبَتِهِ إذَا
نَزَلَتْit befalls أَشَدُّmore severe مُصيبَةًa calamity للشّامِتِfor the one who gloats
نَزَلَتْ أَشَدُّ مُصيبَةً للشّامِتِ
A young man's patience with his calamity, when
A young man's patience in misfortune when
it befalls him, is a harsher calamity for the one who gloats.
It falls is more grievous to the gloating foe