Riyad us-Saliheen

Abu Sa'id Al-Khudri (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "When one yawns, he should put his hand over his mouth, otherwise the devil will enter."

Abu Khattab Qatadah (May Allah be pleased with him) reported: I asked Anas: "Did the Companions of the Messenger of Allah (ﷺ) use to shake hands?'' He said: "Yes.''

Anas (May Allah be pleased with him) reported: When the people of Yemen came, the Messenger of Allah (ﷺ) said, "The people of Yemen have visited you. They are the first to introduce the tradition of handshaking."

Al-Bara' (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "Two Muslims will not meet and shake hands without having their sins forgiven (by Allah ) before they depart."

Anas (May Allah be pleased with him) reported: A man asked: "O Messenger of Allah! When a man meets a brother or a friend, should he bow to him?" He said, "No." The man asked whether he should embrace and kiss him? The Messenger of Allah (ﷺ) replied, "No." He asked whether he should hold his hand and shake it? The Messenger of Allah (ﷺ) replied, "Yes."

Safwan bin 'Assal (May Allah be pleased with him) reported: A Jew asked his companion to take him to the Prophet (ﷺ); and when they came to the Messenger of Allah (ﷺ), they asked him about the nine clear signs (given to Prophet Musa). Safwan narrated the long Hadith which concludes: They kissed the hands and feet of the Messenger of Allah (ﷺ) and said: "We testify that you are a Prophet."

In a narration of Ibn Umar (May Allah be pleased with them) at the end of the narration of the Hadith ) he said: "We came near the Prophet (ﷺ) and kissed his hand."

'Aishah (May Allah be pleased with her) reported: Zaid bin Harithah came to the Messenger of Allah (ﷺ) when he was in my house. Zaid knocked at the door. The Prophet (ﷺ) rose to receive him, trailing his garment. He embraced and kissed him..

Abu Dharr (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said to me, "Do not belittle any good deed, even your meeting with your brother (Muslim) with a cheerful face."

Abu Hurairah (May Allah be pleased with him) reported: The Prophet (ﷺ) kissed his grandson Hasan bin 'Ali in the presence of Aqra' bin Habis. Thereupon Aqra' remarked: "I have ten children and I have never kissed any one of them." The Messenger of Allah (ﷺ) cast a glance upon him and said, "He who does not show mercy to others, will not be shown mercy."