Musannaf Ibn Abi Shayba 3:2026

Abu Bakr narrated to us, Abu Khalid al-Ahmar narrated to us, from Muhammad ibn ‘Ajlan, from Zayd ibn Aslam, from ‘Ata’ ibn Yasar, from Abu Sa’id al-Khudri, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "If one of you doubts in his prayer, let him cast away the doubt and build upon certainty. Then, when he is certain of the completion, let him perform one rak'ah and prostrate two prostrations. If his prayer was complete, the rak'ah and the two prostrations will be a supererogatory act. And if it was incomplete, the rak'ah will be the completion of his prayer, and the two prostrations will humble the devil."