6. Ali ibn Ibrahim has narrated from his brother Ishaq ibn Ibrahim from Muhammad ibn ’Isma‘il ibn Bazi‘ who has said the following: “Abu al-Hassan, al-Rida , has said, ‘In the case of women about Wudu’ for Salah (prayer), Allah has made it obligatory in washing their hands to pour water over the interior side of their forearm and for men to pour water over the exterior side of their forearms.’”