A--- `A'ishah (May Allah be pleased with her), the wife of Allah's Messenger (Peace be upon him), reported that Allah's Messenger (Peace be upon him) used to say: Observe moderation (in doing deeds), and if you fail to observe it perfectly, try to do as much as you can do (to live up to this ideal of moderation) and be sure that none would be able to get into Paradise because of his deeds alone. They (the companions of the Holy Prophet) said: Allah's Messenger, not even thou? Thereupon he said:

Not even I, but that Allah wraps me in His Mercy, and bear this in mind that the deed loved most by Allah is one which is done constantly even though it is insignificant.” (Bukhari and Muslim)