Silsilat al-Ahadith al-Sahihah

Qais says that Sayyiduna Jarir (may Allah be pleased with him) said: Whenever the Messenger of Allah (peace and blessings be upon him) saw me after I embraced Islam, he would smile. And on one occasion, the Messenger of Allah (peace and blessings be upon him) said: "The best man of Yemen will enter through this door; there will be a mark of kingship on his face." Just then, Sayyiduna Jarir (may Allah be pleased with him) entered.