Sayyiduna Jabir bin Samurah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) used to offer the prayers in much the same way as you pray today, but he used to make them light; his prayer was lighter than your prayer. He (peace and blessings be upon him) used to recite in Fajr Surah al-Waqi'ah and surahs like it.
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1901