«فَإِنْ لَامَنِي الْقَوْمُ قُلْتُ: اعْذُرُوا، فَلَيْسَ عَلَى أَعْرَجَ مِنْ حَرَجِ»
If people blame me, I say: excuse me—for no hardship is laid upon a lame person.
Lāmanī means 'they blamed me'; iʿdhurū asks forgiveness; aʿraj is a lame person, and ḥaraj is hardship or constraint. Aʿraj / ḥaraj gives the closing line a witty sound pattern.
The humour lies in using an outwardly assumed disability as a ready-made excuse. The poem draws a distinction between genuine hardship and strategically performed hardship.