“We went out with the Messenger of Allah ﷺ to attend a funeral, and he saw some people who had cast aside their upper sheets and were walking in their shirts only. The Messenger of Allah ﷺ said: ‘Are you adopting the practice of the days of ignorance?’ or; ‘Are you imitating the behavior of the days of ignorance? I was about to supplicate against you that you would return in a different form.’ So they put their sheets back on and never did that again.”  

عَنْ عِمْرَانَ بْنِ الْحُصَيْنِ وَأَبِي بَرْزَةَ قَالاَ خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ فِي جِنَازَةٍ فَرَأَى قَوْمًا قَدْ طَرَحُوا أَرْدِيَتَهُمْ يَمْشُونَ فِي قُمُصٍ فَقَالَ رَسُولُ اللَّهِ ﷺ أَبِفِعْلِ الْجَاهِلِيَّةِ تَأْخُذُونَ أَوْ بِصُنْعِ الْجَاهِلِيَّةِ تَشَبَّهُونَ لَقَدْ هَمَمْتُ أَنْ أَدْعُوَ عَلَيْكُمْ دَعْوَةً تَرْجِعُونَ فِي غَيْرِ صُوَرِكُمْ قَالَ فَأَخَذُوا أَرْدِيَتَهُمْ وَلَمْ يَعُودُوا لِذَلِكَ