Sayyiduna Ibn Abbas (may Allah be pleased with them both) relates: Four hundred men of the tribe of Daws came to the Messenger of Allah (peace and blessings be upon him), and the Messenger of Allah (peace and blessings be upon him) said: "Welcome, O people with the most beautiful faces, the most fragrant mouths, and the greatest trustworthiness."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12892