‘Abdallah b. Busr told of a desert Arab coming to the Prophet and asking who was best among men, to which he replied, “Happy is he whose life is long and whose deeds are good.” He asked God’s messenger what deed was most excellent, and he replied, “That you should leave the world with the mention of God fresh on your tongue.”
Abud Darda’ reported God's messenger as saying, “Would you like me to tell you the best and purest of your deeds in the estimation of your King, those which raise your degrees highest, those which are better for you than spending gold and silver, and are better for you than that you should meet your enemy and cut off one another's head?” On receiving a reply in the affirmative he said, “It is remembering God.”
Malik, Ahmad, Tirmidhi and Ibn Majah transmitted it, but Malik traced it no farther back than Abud Darda’.
Anas reported God’s messenger as saying, “When you come upon the pastures of paradise feed on them.” On being asked what the pastures of paradise were he replied that they were circles where God is remembered.
Abu Bakr met me and asked, “How are you, Hanzala?” I replied, “Hanzala has become a hypocrite."He said, “Praise be to God! What are you saying?” I replied, “We are with God’s messenger and he reminds us of hell and paradise making us almost seem to see them, then when we go out and leave God’s messenger we have dealings with our wives, our children and our properties and forget much.” On hearing this Abu Bakr said, “I swear by God that I have the same kind of experience.” He and I then went to visit God’s messenger, and I said, “Hanzala has become a hypocrite, messenger of God.” He asked what I meant by that and I replied, “Messenger of God, we are with you when you are reminding us of hell and paradise and making us almost seem to see them, then when we go out and leave you we have dealings with our wives, our children and our properties and forget much.” God's messenger replied, “By Him in whose hand my soul is, if you were to continue in what you have been engaged in with me and in remembering God, the angles would shake hands with you when you lie down and when you walk about; 1. but, Hanzala, there is a time for everything.” He said this three times.
1. i.e. when you are at leisure and when you are engaged in business