Sayyiduna Mazin bin Khaythamah and Habil bin Ka'b (may Allah be pleased with them both) - who were from Banu Mazin - were sent by Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) on the day he encamped between al-Sakun and al-Sakasik and fought until the people accepted Islam; then the two of them came as a delegation to the Messenger of Allah (peace and blessings be upon him), and "he (peace and blessings be upon him) established brotherhood between al-Sakun and al-Sakasik."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17931