The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, informed me from Abu al-Qasim Jaʿfar ibn Muhammad, from his father, from Saʿd ibn Abdullah, from Ahmad ibn Muhammad ibn ʿIsa, from al-Abbas ibn Maʿruf, from Ali ibn Mahziyar, from Hammad ibn ʿIsa, from some of his companions: It is narrated from one of the two Imams عليه السلام, regarding a man performing Wuduʾ while wearing a turban: "He should lift the turban just enough to insert his finger and wipe the front part of his head."