Muhammad ibn al-Hasan al-Saffar, from Yaqub ibn Yazid, Yasir al-Qummi, from Abu al-Hasan al-Ridha عليه السلام: Imam عليه السلام said: “Fitrah is one sa’ of wheat, one sa’ of barley, one sa’ of dates, and one sa’ of raisins. It was only Muawiyah who reduced the wheat.” (May Allah سبحانه وتعالى curse him)