"So We seized him with a terrible seizure," meaning: intense.
Muhammad said: It is said: 'The land was unwholesome (istawbalat),' and it is said: 'Unwholesome fodder (kala' mustawbal),' meaning: it is not easily digested.
﴿فَأَخَذْنَاهُ أَخْذًا وبيلا﴾ شَدِيدًا.
قَالَ محمدٌ: يُقَالُ: اسْتَوْبَلَتِ الْبَلَد، وَيُقَال: كَلأ مٌ سْتَوْبَلٌ؛ أَي: لَا يُسْتمرأ.