1 2 Turner 2006, p. 402. ↑ The relationship between Ishaq and 'Abdallah is based on Ishaq's genealogy as "Ishaq ibn Ibrahim [ibn al-Husayn] ibn Mus'ab;" Daniel 2015; Turner 2006, p. 402. Al-Tabari 1985–2007, v. 32: p. 184; v. 33: p.