Chapter on the Manner of Prayer, Explanation of the Fifty-One Rak‘ahs; The Order, Recitation, Tasbih in Bowing and Prostration, Qunut, and What is Obligatory and Recommended Therein

Muhammad ibn Ya‘qub from Ali ibn Ibrahim from his father from Ibn Abi Umayr from ‘Umar ibn Udhaynah from Zurarah, who said: I said to Abu Ja‘far, peace be upon him: "The two rak‘ahs that are before the dawn (al-ghadah) prayer, what is their time?" Imam عليه السلام said: "Before the rising of the dawn. So when the dawn rises, then the time of the dawn prayer has entered."