Musannaf Ibn Abi Shayba 23:64

Abu Usama narrated to us, from Jarir ibn Hazim, from Ya'la ibn Hakim, who said: "I am most certain that he said: from Sa'id ibn Jubayr, who said: Ibn Umar said: 'Modesty and faith are coupled together; so if one of them is removed, the other is removed.'"