Hadith 5355
عَن أنسٍ قَالَ: إِنَّكُمْ لَتَعْمَلُونَ أَعْمَالًا هِيَ أَدَقُّ فِي أَعْيُنِكُمْ مِنَ الشَّعْرِ كُنَّا نَعُدُّهَا عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ من الموبقات. يَعْنِي المهلكات. رَوَاهُ البُخَارِيّ
It is narrated from Anas (may Allah be pleased with him), he said: You do such deeds which, in your eyes, are finer than a hair (i.e., extremely insignificant), whereas in the time of the Messenger of Allah (peace and blessings be upon him), we used to consider them destructive. Narrated by al-Bukhari.