Ali bin Abi Talib (may Allah be pleased with him) narrates: When a group of people passes by, it is sufficient for one person among them to give the greeting (salaam), and for those who are sitting, it is sufficient for one person among them to reply. Baihaqi narrated it as marfu’ in Shu’ab al-Iman. And Abu Dawood, after narrating this hadith, said: Hasan bin Ali narrated it as marfu’, and he is a teacher of Abu Dawood. Hasan, narrated by al-Bayhaqi in Shu’ab al-Iman and Abu Dawood.

Amr bin Shu’aib narrates from his father, and he from his grandfather, that the Messenger of Allah, peace and blessings be upon him, said: Whoever imitates anyone other than us is not from among us. Do not imitate the Jews and Christians, for the greeting of the Jews is to gesture with the fingers, while the greeting of the Christians is to gesture with the palms. (Tirmidhi), and he said: Its chain is weak. Its chain is weak, narrated by al-Tirmidhi.

Abu Hurairah (may Allah be pleased with him) narrates from the Prophet (peace and blessings of Allah be upon him), he said: "When any one of you meets his (Muslim) brother, he should greet him with Salam. If a tree, wall, or stone comes between them and then they meet again, he should greet him with Salam again." Its chain is authentic, narrated by Abu Dawood.

Qatadah (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "When you enter a house, greet its inhabitants with salam, and when you leave, bid farewell to its inhabitants with salam." Al-Bayhaqi has narrated it as a mursal hadith in Shu'ab al-Iman. Its chain is weak. Narrated by al-Bayhaqi in Shu'ab al-Iman.

It is narrated from Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Son! When you go to your family, greet them with salam; (in this way) there will be blessings upon you and your household." Its chain is weak, narrated by al-Tirmidhi.

Jabir (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "First give salam, then speak." Tirmidhi, and he said: This hadith is munkar. Its chain is very weak. Narrated by Tirmidhi.

Imran bin Husayn (may Allah be pleased with him) narrates: In the days of ignorance, when we met (someone), we used to say: "May Allah keep your eye cool, and may you wake up fresh and happy." When Islam came, we were forbidden from this. Its chain is weak. Narrated by Abu Dawood.

Ghalib narrates: We were sitting at the door of Hasan Basri (may Allah have mercy on him) when a man came and said: My father narrated from my grandfather, who said: My father sent me to the Messenger of Allah (peace and blessings of Allah be upon him) and said: Go to him and convey my greetings. He said: I reached the Messenger of Allah (peace and blessings of Allah be upon him) and said: My father sends you greetings. The Messenger of Allah (peace and blessings of Allah be upon him) said: "Peace be upon you and your father." Its chain is weak. Narrated by Abu Dawood.

It is narrated from Abu Al-Ala bin Hadhrami that Alaa Hadhrami (may Allah be pleased with him) was the governor of Bahrain appointed by the Messenger of Allah (peace and blessings be upon him), and when he wrote letters to you, he would begin with his own name (from Alaa). Its chain is weak, narrated by Abu Dawood.

It is narrated from Jabir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When any of you writes a letter, let him dust it with earth, for by doing so the task is completed quickly and easily." (Tirmidhi), and he said: This hadith is munkar. Its chain is very weak. Narrated by Tirmidhi.