Bahz bin Hakim narrated from his father that his grandfather Mu'awiyah Al-Qushairi said:
"The Messenger of Allah said: 'Let the one who is present convey to the one who is absent.'" (FR)
English reference (FR): Vol. 1, Book 1, Hadith 234 (FR)
Arabic reference (FR): Book 1, Hadith 240 (FR)