The Prophet (may Allah's peace and blessings be upon him) used to pray as much Qiyām al-Layl in his house as Allah willed him to pray. The Companions and the Tābi‘is after them were keen on knowing about his acts of worship in detail and ask about what they could not see of his worship at home. In this Hadīth, the Tābi‘i Abu Salamah ibn ‘Abdur-Rahmān says that he asked the Mother of the Believers, ‘Ā’ishah (may Allah be pleased with her), about the Qiyām al-Layl of the Messenger of Allah (may Allah's peace and blessings be upon him) and the number of its Rak‘ahs and the manner of its performance. She informed him that the Prophet (may Allah's peace and blessings be upon him) used to perform thirteen Rak‘ahs; he would perform eight Rak‘ahs, two Rak‘ahs each, as narrated in the Two Sahīh Collections, and he would then pray the Witr, i.e., with the ninth Rak‘ah. As narrated in a version by Muslim: "Nine Rak‘ahs while standing and he would perform one of them as the Witr," i.e., he would make the last Rak‘ah among them the Witr of his prayer. In another version by Muslim: "He would observe five Rak‘ahs of which was the Witr, not sitting except at the last of them," i.e., he used to offer four Rak‘ahs, two Rak‘ahs each, and then perform the fifth Rak‘ah as the Witr, not sitting for tashahhud except in the last Rak‘ah. In another version by Muslim: "The prayer of the Messenger of Allah (may Allah's peace and blessings be upon him) in the night consisted of ten Rak‘ahs, and then he would observe the Witr with one Rak‘ah and offer the two Rak‘ahs of Fajr; those are thirteen Rak‘ahs." This denotes the diversity of the Prophet's Qiyām al-Layl in terms of duration and the number of Rak‘ahs, depending on his condition and energy. Also, the Prophet (may Allah's peace and blessings be upon him) used to perform two Rak‘ahs while sitting. Apparently, these two Rak‘ahs were after the Witr and before the time of Fajr. When he wanted to perform rukū‘ while in this state of sitting, he would stand up and then bow down in the well-known manner. Then, when the time of Fajr came, he (may Allah's peace and blessings be upon him) would offer the two-Rak‘ah Sunnah of Fajr, after the Adhān and before the iqāmah of the Fajr prayer. There are numerous other well-known Hadīths, in the Two Sahīh Collections and elsewhere, that enjoin making the last prayer in Qiyām al-Layl the Witr. An example is a Hadīth in which ‘Abdullāh ibn ‘Umar (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "Make the last of your prayer at night the Witr." As for these two Rak‘ahs which the Prophet (may Allah's peace and blessings be upon him) offered after the Witr and before Fajr, this is to demonstrate the permissibility of praying after the Witr, and they were not performed on a persistent basis, for what the Prophet (may Allah's peace and blessings be upon him) did persistently was to conclude with the Witr, as mentioned above. In the Hadīth: Praying at night while sitting.