Al-Bazzar recorded from Sayyiduna Anas (may Allah be pleased with him): In the two rak'ahs that the Prophet (peace and blessings be upon him) used to pray after witr, he would recite Surah al-Kafirun and Surah al-Ikhlas. The narrators of both narrations are thiqat (trustworthy), although the chain of the second narration contains Utbah bin Abi Halim, who is thiqah (trustworthy), but al-Nasa'i (may Allah have mercy on him) and others declared him da'if (weak).