From him, from Muhammad ibn al-Hasan ibn ‘Allan, who said: Ishaq ibn ‘Ammar narrated to me, who said: I asked Abu Abdillah عليه السلام, peace be upon him, about the two rak‘ahs before Fajr. Imam عليه السلام said: "Just before Fajr, with it, and after it." I asked: “When do I leave them in order to make them up later?” Imam عليه السلام said: "When the mu’adhdhin says: ‘Qad qamatis salah’ (The prayer has been established)."