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.'" (ES)
English reference (ES): Vol. 1, Book 1, Hadith 234 (ES)
Arabic reference (ES): Book 1, Hadith 240 (ES)