Ibn Rajab al-Hanbali opens his biography of the venerable saintly scholar, ‘Abd al-Qadir al-Jilani, with this highly profound and glowing tribute: ‘The worldly renuncient (al-zahid), shaykh of the age, exemplar of the knowers [of Allah] (qudwat al-‘arifin), sultan of the shaykhs, master of the people of the path in his time (sayyid ahl al-tariqah fi…