The Messenger of Allah ﷺ said, "Worship the Most Merciful and spread the greeting of peace."
حدثنا أبو بكر بن أبي شيبة حدثنا محمد بن فضيل عن عطاء بن السائب عن أبيه
قال رسول الله ﷺ اعبدوا الرحمن وأفشوا السلام
[Sahih] Reported by Tirmidhi, Book of Foods, Chapter on the merit of feeding others, no. 1855, from the hadith of Ataa, and he said it is hasan sahih. It is also found in Musannaf: 8/436, and the hadith has many corroborating witnesses.