Lady Aisha (may Allah be pleased with her) says that the Messenger of Allah (peace and blessings be upon him) used to pray four rak‘ahs before Zuhr and would not abandon the Sunnah prayers before Fajr, and he used to say: "The two best surahs that are recited in the two rak‘ahs before Fajr are: «قل هو الله احد» ‏‏‏‏ and «قل يا ايها الكافرون» ."

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) used to recite «قل يا ايها الكافرون» and «قل هو الله احد» ‏‏‏‏ in the two rak‘ahs before Fajr and the two rak‘ahs after Maghrib.