Hadith 891:1
'Affan narrated to us, Shu'bah narrated to us, from al-Jurayri, from Yazid ibn 'Abdullah ibn al-Shikhkhir, from a man of his people, that the Messenger of Allah (peace and blessings of Allah be upon him) passed by him and said: "Recite with them in your prayer: the two refuge-seeking surahs (al-Mu'awwidhatayn)."
حدثنا عفان، حدثنا شعبة، عن الجريري، عن يزيد بن عبد الله بن الشخير، عن رجل من قومه، أن رسول الله صلى الله عليه وسلم، مر به، فقال: " اقرأ بهما في صلاتك: بالمعوذتين "