الرأي الفرد كالخيط السحيل، والرأيان كالخيطين، والثلاثة الآراء كالثلاثة لا تكاد تنقطع
An individual opinion is like a single thread, while two opinions are like two interwoven threads, and three can never be broken.
—‘Umar ibn al-Khaṭṭāb [d. 23H/644CE]
from Dr. ‘Ali Muhammad al-Sallabi, ‘Umar: His Life and Times. International Islamic Publishing House. 2002.