﴿ فَذَرْهُمْ يَخُوضُوا۟ وَيَلْعَبُوا۟ حَتَّىٰ يُلَٰقُوا۟ يَوْمَهُمُ ٱلَّذِى يُوعَدُونَ ﴾

“Hence, leave them to indulge in idle talk and play [with words] until they face that [Judgment] Day of theirs which they have been promised –”

Please check ayah 70:44 for complete tafsir.