Makhul (may Allah have mercy on him) narrated: I, Ibn Abi Zakariyya and Sulayman bin Habib went to Sayyiduna Abu Umamah (may Allah be pleased with him) in Hims. We greeted him with salam, and he said: This gathering of yours is part of Allah's conveying (the message) to you and establishing His proof against you. Indeed, the Messenger of Allah (peace and blessings be upon him) has conveyed (the religion), so you too convey it onward.
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7583