Hazrat Mu'adh bin Jabal (may Allah be pleased with him) narrates that we were returning from the expedition of Tabuk with the Messenger of Allah (peace and blessings be upon him). When I saw that the Prophet (peace be upon him) was alone, I asked, "O Messenger of Allah! Inform me of an action which, if I do it, I will enter Paradise." The Prophet (peace be upon him) said: "Wonderful, wonderful! Indeed, you have asked about a great matter. And it is easy for the one for whom Allah makes it easy: it is that you observe the obligatory prayers, pay the obligatory zakat, and meet Allah in such a state that you have not associated anything with Him. And shall I not guide you to the foundation of the matter, its pillar, and its peak? Indeed, the foundation of the matter is Islam; whoever embraces Islam is safe. Its pillar is prayer, and its peak and hump is striving in the path of Allah."