(b) Mu'adh bin Hisham narrated it from his father with the same meaning, except that he said: "By Allah, I will bring the prayer of the Messenger of Allah (peace and blessings be upon him) close to you." Likewise, this narration is also found in Sahih Muslim and Sahih al-Bukhari.
(c) From all these narrations, qunut is established in three prayers.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3090