Sunan at-Tirmithiy كتاب الصلاة باب ما جاء فى النهى عن القراءة فى الركوع والسجود
The Messenger of God, peace and blessings of God be upon him, said, "The two units of [voluntary] prayer at dawn[1] are better than the world and what it holds." Footnotes: [1]: before dawn prayer, (fajr) the first prescribed prayer of the day that takes place before sunrise. Click on ḥadīth to read more