Duas and prayers - Prayers at night (Tahajuud)
Allah's Apostle used to offer eleven Rakat and that was his prayer. He used to prolong the prostration to such an extent that one could recite fifty verses (of the Quran) before he would lift his head. He used to pray two Rakat (Sunna) before the Fajr prayer and then used to lie down on his right side till the call-maker came and informed him about the prayer.
The Prophet used to stand (in the prayer) or pray till both his feet or legs swelled. He was asked why (he offered such an unbearable prayer) and he said, "should I not be a thankful slave."
In my house he (Prophet (p.b.u.h) ) never passed the last hours of the night but sleeping.
Anas bin Malik said, "The Prophet (p.b.u.h) and Zaid bin Thabit took their Suhur together. When they finished it, the Prophet stood for the (Fajr) prayer and offered it." We asked Anas, "What was the interval between their finishing the Suhur and the starting of the morning prayer?" Anas replied, "It was equal to the time taken by a person in reciting fifty verses of the Quran."
'Abdullah said, "One night I offered the Tahajjud prayer with the Prophet and he kept on standing till an ill-thought came to me." We said, "What was the ill-thought?" He said, "It was to sit down and leave the Prophet (standing)."
Narrated Hudhaifa :
Whenever the Prophet got up for Tahajjud prayer he used to clean his mouth (and teeth) with Siwak.
Narrated 'Abdullah bin 'Umar :
A man said, "O Allah's Apostle! How is the prayer of the night?" He said, "Two Rakat followed by two Rakat and so on, and when you apprehend the approaching dawn, offer one Raka as Witr."
Narrated Anas bin Malik:
Once the Prophet (p.b.u.h) entered the Mosque and saw a rope hanging in between its two pillars. He said, "What is this rope?" The people said, "This rope is for Zainab who, when she feels tired, holds it (to keep standing for the prayer.)" The Prophet said, "Don't use it. Remove the rope. You should pray as long as you feel active, and when you get tired, sit down."