﴿ لَا تَعْتَذِرُوا۟ قَدْ كَفَرْتُم بَعْدَ إِيمَٰنِكُمْ ۚ إِن نَّعْفُ عَن طَآئِفَةٍۢ مِّنكُمْ نُعَذِّبْ طَآئِفَةًۢ بِأَنَّهُمْ كَانُوا۟ مُجْرِمِينَ ﴾

“Do not offer [empty] excuses! You have indeed denied the truth after [having professed] your belief [in it] - Though We may efface the sin of some of you, We shall chastise others - seeing that they were lost in sin.”

(Make no excuse) for what you said. (Ye have disbelieved after your (confession of) belief) while claiming you are believers. (If We forgive a party of you) i.e. Juhayr Ibn Humayr because he did not make fun of Allah or the Messenger but laughed with the others, (a party of you) Wadi'ah Ibn Judham and Jadd Ibn Qays (We shall punish because they have been guilty) because they were inwardly idolaters.