The name of the religion is Islam, which comes from an Arabic root word meaning “peace” and “submission.” Islam teaches that one can only find peace in one’s life by submitting to Almighty God (Allah) in heart, soul and deed. The same Arabic root word gives us “Salaam alaykum,” (“Peace be with you”), the universal Muslim greeting.
“When you are greeted with a greeting, greet in return with what is better than it, or (at least) return it equally. Certainly, God is Ever a Careful Account Taker of all things.” (Quran 4:86)
Better Islamic greetings include, Assalam Alaikum wa Rahmatullah, which means, May God grant you protection, security and mercy, and Assalam Alaikum wa Rahmatullah wa Barakatuh, which means, May God grant you protection, security, mercy and may He bless you. Greeting in return with something better would be, for example, after hearing the words Assalam Alaikum you would respond, wa Alaikum Assalam wa Rahmatullah.
Making that small effort to greet others in this manner at every opportunity increases rewards. Each time a believer says the words Assalam Alaikum or responds to this greeting, his bank of good deeds is increased.
One day a man passed by the Prophet Muhammad while he was sitting with some men, and said “Assalamu Alaikum”. The Prophet said “He will have 10 rewards”. Another man passed by and said “Assalamu alaikum wa rahmatullah”. The Prophet said he will have 20 rewards”. Another man passed and said “Assalamu alaikum wa rahmat ullaah wa barakaatuh”. The Prophet said, and he will have 30 rewards.
In addition, throughout the Quran, God repeatedly points out that this is the Islamic greeting. God assures us that struggling to please Him will result in peace and security in Paradise, and when the believer enters paradise he will be greeted by the words Assalam Alaikum.
“And those who believed (in the Oneness of God and His Messengers and whatever they brought) and did righteous deeds, will be made to enter Gardens under which rivers flow, – to dwell therein for ever (i.e. in Paradise), with the Permission of their Lord. Their greeting therein will be, salam!” (Quran 14:23)
“Salam Alaikum for you persevered in patience! Excellent indeed is the final home!” (Quran 13:24)
“When those who believe in Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) come to you, say, “Assalam Alaikum”; your Lord has prescribed Mercy for Himself, so that if any of you does evil in ignorance, and thereafter repents and does righteous good deeds (by obeying God), then surely, He is Oft-Forgiving, Most Merciful.” (Quran6:54)
“Those whose lives the angels take while they are in a pious state (i.e. pure from all evil, and worshiping none but God Alone) saying (to them), Assalam Alaikum enter you Paradise, because of that (the good) which you used to do (in the world).” (Quran 16:52)
“But when you enter the houses, greet one another with a greeting from God, As-salamu Alaikum – blessed and good.” (Quran 24:61)
“And those who kept their duty to their Lord will be led to Paradise in groups and when they reach it the its gates will be opened and the keepers will say, Salam Alaikum, you have done well, so enter here to abide therein.” (Quran 39:73)
Prophet Muhammad reiterated God’s message when he said, “You will not enter Paradise until you believe, and you will not believe until you love one another. Shall I tell you about something which, if you do it, will make you love one another? Greet each other with Salam”
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