The Prophet ﷺ was asked about the time of the dawn prayer. He prayed it as soon as dawn broke, then on the following day he prayed it after the sky had grown bright. Then he said, "Where is the one who asked about the time of the dawn prayer? It is between these two."
حدثنا يحيى عن حميد
سئل النبي ﷺ عن وقت صلاة الصبح فصلى حين طلع الفجر ثم صلى الغداة بعد ما أسفر ثم قال أين السائل عن وقت صلاة الصبح ما بين هذين