Musnad Ahmad 27:829

Abu Ahmad narrated to us, Sufyan narrated to us, from Alqamah ibn Marthad, from Sulayman ibn Razin, from Ibn Umar, who said: A man asked the Prophet, may Allah bless him and grant him peace, while he was upon the pulpit addressing the people, about a man who separated from his wife with three [divorces]. He then mentioned its meaning.