Musnad Abu Ya'la al-Mawsili 110:20

Ubayd Allah ibn Umar al-Qawariri narrated to us, Hammad ibn Zayd narrated to us, al-Ja'd Abu Uthman al-Yashkuri narrated to us, from Abu Raja al-Utaridi, from Ibn Abbas, who narrates it from the Prophet, may Allah bless him and grant him peace, who said: "Whoever sees something from his leader that he dislikes, let him be patient, for whoever separates from the community by a span and then dies, dies a death of ignorance."