Anas said "You people do (bad) deeds (commit sins) which seem in your eyes as tiny (minute) than hair while we used to consider those (very deeds) during the life-time of the Prophet ﷺ as destructive sins." (Using translation from Bukhārī 6492)
إِنَّكُمْ لَتَعْمَلُونَ أَعْمَالًا هِيَ أَدَقُّ فِي أَعْيُنِكُمْ مِنَ الشَّعْرِ كُنَّا نَعُدُّهَا عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ مِنَ الْمُوبِقَاتِ