Yahya said: It reached me that whenever a worm would fall from his body, he would put it back in its place and say: "Eat from what Allah has provided for you."
Al-Hasan said: So he called upon his Lord, "Indeed, Satan has touched me with hardship and torment," meaning: in his body. And He said in the other verse: "Indeed, adversity has touched me, and You are the Most Merciful of the merciful."
Muhammad said: "Nusb" and "Nasab" are one and the same, like "Huzn" and "Hazan," and it means fatigue and weariness.
قَالَ يحيى: وَبَلغنِي أَن الدودة كَانَت تقع من جسده فيردّها مَكَانهَا , وَيَقُول: كلي مِمَّا رزقك اللَّه.
قَالَ الْحَسَن: فَدَعَا ربَّه ﴿أَنِّي مَسَّنِيَ الشَّيْطَانُ بِنُصْبٍ وَعَذَابٍ﴾ يَعْنِي: فِي جسده , وَقَالَ فِي الْآيَة الْأُخْرَى: ﴿أَنِّي مَسَّنِيَ الضُّرُّ وَأَنت أرْحم الرَّاحِمِينَ﴾.
قَالَ محمدٌ: النُّصْبُ والنَّصَبُ واحدٌ مثل حُزْن وحَزَن , وَهُوَ العياء والتعب.