Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: The rider should first greet the pedestrian, and the pedestrian the one who is seated and a small group should greet a larger group (with as-Salam-u-'Alaikum).

Abu Talha reported: While we were sitting in front of the houses and talking amongst ourselves, Allah's Messenger ( صلی اللہ علیہ وسلم ) happened to come there. He stood by us and said: What about you and your meetings on the paths? Avoid these meetings on the paths. We said: We were sitting here without (any intention of doing harm to the passers-by); we are sitting to discuss matters and to hold conversation amongst ourselves. Thereupon he said: If there is no help (for you but to sit on these paths), then give the paths their rights and these are lowering of the gaze, exchanging of greetings and good conversation.

Abu Sa'id Khudri reported Allah's Apostle ( صلی اللہ علیہ وسلم ) as saying: Avoid sitting on the paths. They (the Companions) said: Allah's Messenger, we cannot help but holding our meetings (in these paths) and discuss matters (there). Thereupon Allah's Messenger ( صلی اللہ علیہ وسلم ) said: If you insist on holding meetings, then give the path its due right. They said: What are its due rights? Upon this he said: Lowering the gaze, refraining from doing harm, exchanging of greetings, commanding of good and forbidding from evil.

This hadith has been narrated on the authority of Zaid bin Aslam with the same chain of transmitters.

Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: Five are the rights of a Muslim over his brother:

Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: Six are the rights of a Muslim over another Muslim. It was said to him: Allah's Messenger, what are these? Thereupon he said: When you meet him, offer him greetings; when he invites you to a feast accept it, when he seeks your council give him, and when he sneezes and says: "All praise is due to Allah," you say Yarhamuk Allah (may Allah show mercy to you); and when he falls ill visit him; and when he dies follow his bier.

Yahya ibn Yahya narrated to us, Hushaim informed us, from Ubaydullah ibn Abi Bakr, who said: I heard Anas say: The Messenger of Allah, peace and blessings be upon him, said...
And Isma'il ibn Salim narrated to me, Hushaim narrated to us, Ubaydullah ibn Abi Bakr informed us, from his grandfather Anas ibn Malik, that the Messenger of Allah, peace and blessings be upon him, said:
"If the People of the Book greet you, then say: 'And upon you.'"

Anas reported that the Companions of Allah's Apostle ( صلی اللہ علیہ وسلم ) said to him: The People of the Book offer us salutations (by saying as-Salamu-'Alaikum). How should we reciprocate them? Thereupon he said: Say: Wa 'Alaikum (and upon you too).

Ibn 'Umar reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: When the Jews offer you salutations, some of them say as-Sam-u-'Alaikum (death be upon you). You should say (in response to it): Let it be upon you.

This hadith has been narrated on the authority of Ibn 'Umar through another chain of transmitters with a slight variation of wording.