Sunan at-Tirmithiy كتاب الصلاة باب ما جاء ما يقول عند دخول المسجد
The Messenger of God, peace and blessings of God be upon him, said, "Whoever does twelve units of prayer for the forenoon prayer (1), God will build for him a golden palace in Paradise." (1) Forenoon prayer: a voluntary prayer whose time starts about twenty minutes after sunrise and ends about ten minutes before the noon prayer (second prescribed prayer of the day). Click on ḥadīth to read more
Umm-Hāni' related that the Messenger of God, peace and blessings of God be upon him, entered her house on the day of the Liberation of Makkah, washed and prayed eight units of voluntary prayer (1). She said, 'I never saw him pray a lighter prayer, all the while perfecting the bow and prostration." Footnotes: [1] Forenoon prayer: voluntary prayer whose time starts about twenty minutes after sunrise and ends about ten minutes before the noon prayer (second prescribed prayer of the day). Click on ḥadīth to read more