Zayd bin Aslam زيد بن أسلم · Etiquette

"There are no two Muslims who meet and shake hands, but they will be forgiven before they part."

"I had two times of visiting the Messenger of Allah(ﷺ), at night and during the day. If I came to him when he was praying, he would clear his throat (to let me know he was praying)."