Humran, the freed slave of ‘Uthman, said: Uthman b. ‘Affan called for ablution water and this is how he performed the ablution.
He washed his hands thrice. He then rinsed his mouth and cleaned his nose with water (three times). He then washed his face three times, then washed his right arm up to the elbow three times, then washed his left arm like that, then wiped his head; then washed his right foot up to the ankle three times, then washed his left foot like that, and then said: I saw the Messenger of Allah (may peace be upon him) perform ablution like this ablution of mine. Then the Messenger of Allah (may peace be upon him) said: He who performs ablution like this ablution of mine and then stood up (for prayer) and offered two rak’ahs of prayer without allowing his thoughts to be distracted, all his previous sins are expiated.
Ibn Shihab said: Our scholars remarked: This is the most complete of the ablutions performed for prayer.
[Saheeh Muslim Book 002, Number 0436]
Purification (Kitab Al-Taharah) Sahih Muslim
141. Narrated Nu’am Al-Mujmir (radhi Allaahu anhu) : Once I went up the mosque, (along with) Aboo Huraira (radhi Allaahu anhu). (He performed ablution and) said, ” I heard the Prophet (Sallallaahu Alaihi Wasallam) saying,
‘On the Day of Resurrection, my followers will be called Al-Ghurr-ul-Muhajjaloon from the traces of ablution, and whoever can increase the area of his radiance(*) should do so (i.e. by performing ablution in the most perfect manner).'”
[Saheeh Al-Bukhaari, Hadeeth No. 138, Vol. 1]
(*) [H. 141] The Prophet (Sallallaahu Alaihi Wasallam) did not increase the area that what is washed of the bodyparts while doing the ablution as Allaah ordered to be washed, in the Qur’aan.
Source : The Book of At-Tahaara – Chapter 12 – It is preferable to increase the area of radiance and wash perfectly the body parts during ablution.
Al-Lulu Wal-Marjan,Compiled by : Fuwad Abdul-Baqi,Translated by : Dr. Muhammad Muhsin Khan
Notes: al-Ghurr: beautiful, handsome ; al-Muhajjaloon (sing. muhajjal): bright, radiant.