﴿ وَأُحِيطَ بِثَمَرِهِۦ فَأَصْبَحَ يُقَلِّبُ كَفَّيْهِ عَلَىٰ مَآ أَنفَقَ فِيهَا وَهِىَ خَاوِيَةٌ عَلَىٰ عُرُوشِهَا وَيَقُولُ يَٰلَيْتَنِى لَمْ أُشْرِكْ بِرَبِّىٓ أَحَدًۭا ﴾

“And [thus it happened:] his fruitful gardens were encompassed [by ruin], and there he was, wringing his hands over all that he had spent on that which now lay waste, with its trellises caved in; and he could but say, "Oh, would that I had not attributed divine powers to any but my Sustainer!"”

The word: حُسبانا - (husbana) in verse 40 has been explained by Qatadah as 'punishment' in an absolute sense, by Sayyidna Ibn ` Abbas ؓ as 'fire' and by some as 'stoning.' As for what appears after that in the Qur'an: أُحِيطَ بِثَمَرِ‌هِ (And its produce was struck by destruction from all sides - 42), it obviously means that some major calamity hit his gardens, wealth and things of luxury reducing everything to ruins. The Qur'an does not mention any particular calamity explicitly. It appears that, some fire came down from the skies and burnt the whole thing - as it appears in the Tafsir of 'husban' by Sayyidna Ibn 'Abbas ؓ who has explained it as 'fire.' And Allah knows best.