Chosen Islamic Manners

*One should greet their fellow Muslims when they get married, by saying: 'Baa'rakal-laah alaik' and 'baarak Allah lak' and 'Baarakal'laaho laka wa baaraka alaik wa ja'ma'a bai'na'ko-ma fee khair.'

Meaning: May Allah bless you and your spouse, and may He unite both of you in goodness.
*People would come to the Prophet () with their newborn children and he () would make Du'aa for them and moisten a date and put it in the newborn child's mouth so that he could suck on it. (Al-Kalim at-Tayyib)

*One should greet another if he is delivered from a calamity, or receives a grace. If one receives a new job, he should greet, be greeted, and his fellow Muslims should make Du'aa for him that Allah bless him.
*One should congratulate his fellow Muslim on account of a religious grace he is blessed with. Ka'b b. Malik () said that when the words of Allah, the Exalted:

Verily, [O Muhammad,] We have laid before you a manifest victory. (11:88)

The Companions said to the Prophet (): 'wholesomely and pleasantly.'
*One should greet his fellow Muslims on the Day of Eid. The Companions () said that Muhammad b. Ziyaad said: 'I was with Abu Umaamah al-Baahili and other Companions of the Prophet () and when they would return after Eid they would say to each other: 'Taqab'bal'laawho min'naa wa minkom.'