Narrated Anas bin Sirin:
I asked Ibn ‘Umar, “What is your opinion about the two Rakat before the Fajr (compulsory) prayer, as to prolonging the recitation in them?” He said, “The Prophet (p.b.u.h) used to pray at night two Rakat followed by two and so on, and end the prayer by one Raka Witr. He used to offer two Rakat before the Fajr prayer immediately after the Adhan.” (Hammad, the sub-narrator said, “That meant (that he prayed) quickly.)”
Similar Hadith here.
- Prophet (SAW) used to pray two rak`aat (Sunnah) before Fajr prayer right after the Adhaan.
- He prayed them quickly or lightly, meaning he did not prolong recitation in them.
- We get to know from other narrations that he used to recite Surah al-Kafiroon in the first rak`ah and Surah al-Ikhlaas in the second rak`ah of the Fajr Sunnah prayers.
Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (PBUH) recited in the two supererogatory Rak`ah of the Fajr prayer Surat Al-Kafirun (No. 109) [in the first Rak`ah], and Surat Al-Ikhlas (No. 112) [in the second rak`ah].
He [SAWS] heard a man reciting the former soorah in the first rak’ah (Surah Kafiroon), so he said, “This is a slave who believes in his Lord.” Then the man recited the latter soorah in the second rak’ah (Surah Ikhlas), so he said, “This is a slave who knows his Lord.”
[Al-Albani in “The Prophet’s Prayer Described”]
And here’s a nice relative blog post I came across. :)