﴿ بَلْ كَذَّبُوا۟ بِٱلسَّاعَةِ ۖ وَأَعْتَدْنَا لِمَن كَذَّبَ بِٱلسَّاعَةِ سَعِيرًا ﴾

“But nay! It is [the very coming of] the Last Hour to which they give the lie! However, for such as give the lie to [the announce­ment of] the Last Hour We have readied a blazing flame:”

Please check ayah 25:14 for complete tafsir.