Mu‘adh b. Jabal said that he heard God’s messenger say, “He who meets his Lord having associated nothing with Him, observed the five times of prayer, and fasted during Ramadan will be forgiven.” Mu'adh asked whether he should not give them the good news, but was told to let them go on doing works.
I came to God's messenger and asked, “Who is associated with you in this matter, messenger of God?” He replied, “Both freeman and slave.” I asked what Islam was and he said, I “Pleasant speech and the provision of food.” I asked what faith was and he said, “Endurance and benevolence.” I asked what aspect of Islam was most excellent, and he replied that it was to be seen in him from whose tongue and hand the Muslims were safe. I asked what aspect of faith was most excellent, and he replied that it was a good disposition. I asked what feature of prayer was most excellent, and he replied that it consisted in standing for a long time in humility. I asked him what aspect of emigration (hijra) was most excellent, and he replied, “Abandoning (an tahjura) what your Lord abhors.” I asked what aspect of jihad was most excellent, and he replied that it was when a man’s steed was wounded and his blood was shed. I asked him which hour was most excellent, and he replied that it was towards the end of the darkest part of the night.
He also said that he asked the Prophet what was the most excellent aspect of faith, and received the reply, “That you should love for God’s sake, hate for God’s sake, and employ your tongue in making mention of God.” “What more, messenger of God?” he asked and was told, “That you should like other people to have what you like yourself, and dislike that they should have what you dislike yourself.”
Abu Umama reported that a man asked God’s messenger what faith was, to which he replied, “When your good deed pleases you and your evil deed grieves you, you are a believer.” He then asked what sin was and received the reply, “When you have a besetting sin, give it up.”