instructions of the Prophet

I heard the Messenger of Allah ( may peace and blessings of Allah be upon him ) saying, "O people, exchange greetings of peace (i.e., say: As-Salamu 'Alaikum to one another), feed people, strengthen the ties of kinship, and be in prayer when others are asleep, you will enter Jannah in peace."

‘‘My friend, may peace and blessings of Allah be upon him, instructed me to observe three practices: to fast three days every month, to pray two rak'as in the forenoon, and to observe a witr before going to sleep.” *i.e. the Prophet.