﴿ وَأَصْبَحَ ٱلَّذِينَ تَمَنَّوْا۟ مَكَانَهُۥ بِٱلْأَمْسِ يَقُولُونَ وَيْكَأَنَّ ٱللَّهَ يَبْسُطُ ٱلرِّزْقَ لِمَن يَشَآءُ مِنْ عِبَادِهِۦ وَيَقْدِرُ ۖ لَوْلَآ أَن مَّنَّ ٱللَّهُ عَلَيْنَا لَخَسَفَ بِنَا ۖ وَيْكَأَنَّهُۥ لَا يُفْلِحُ ٱلْكَٰفِرُونَ ﴾

“And on the morrow, those who but yesterday had longed to be in his place exclaimed: “Alas [for our not having been aware] that it is indeed God [alone] who grants abundant sustenance, or gives it in scant measure, unto whichever He wills of His crea­tures! Had not God been gracious to us, He might have caused [the earth] to swallow us, too! Alas [for our having forgotten] that those who deny the truth can never attain to a happy state!””

And those who had longed to be in his place the day before that is only recently were saying ‘Alas! God expands provision for whomever He will of His servants and straitens it He restricts it for whomever He will way-ka’anna way is a noun of action with the sense of ‘How astonished I am’ while the kāf functions as a causative lām ‘because’. Had God not been gracious to us He would have made us to be swallowed too’ read active la-khasafa or passive la-khusifa. Lo! indeed those who are ungrateful for God’s grace such as Korah never prosper.