One of the Companions said:
You are doing deeds that are, in your eyes, more insignificant than a hair, whereas at the time of the Messenger of Allaah (‘alayhis-salaam) we would consider them to be destructive sins! [1]
ibn Rajab, the Journey to Allah
[1] al-Bukhaaree no. 6492 on the authority of Anas.
Daily Islamic Benefits 