‘Uqbah Ibn ‘Amir reported: "I followed the Messenger of Allah (ﷺ) when he was riding, and I placed my hand on his foot and said : O Messenger of Allah, teach me Sūrah Hud and Sūrah Yusuf. He said: 'You will never recite anything greater (for refuge) before Allah than: "Qul a’oodhu birabbil falaq (Surat al-Falaq)”, and “Qul a’oodhu birabbin-naas (Surat al-Nās).” Reference: Sunan an-Nasa'i 953, also collected in Sunan Al-Dārimī, no. 3343.