The Ruling on Qunut in the Obligatory Prayers
Question:
Did the Messenger of Allaah (sallallaahu alaihi wa sallam) perform Qunut in the morning prayer in the last Rakah, after bowing, raising his hands and saying: O Allaah! Guide me with those whom You have guided... every day until he left this world?
Answer:
The Prophet (sallallaahu alaihi wa sallam) did not always perform Qunut in the morning prayer, neither with the well known supplication: O Allaah! Guide me with those whom You have guided...etc. nor with any other supplication. He only performed Qunut in times of crisis, that is, if some disaster befell the Muslims from the enemies of Islam, he would make Qunut for a certain period of time, supplicating against them and for the Muslims ... this is what the Hadiths for the Messanger of Allaah (sallallaahu alaihi wa sallam) show. It has been authentically reported from the Hadith of Sad bin Tariq Al-Ashjai, that he said to his father, may Allaah be pleased with him: O my father! You prayed behind the Messenger of Allah (sallallaahu alaihi wa sallam) and behind Abu Bakr, Umar, Uthman and Ali, may Allaah be pleased with them: Did they used to make Qunut in Fajr prayer? He said: O my son! (This is) a novelty. That which is narrated on the authority of Anas, may Allaah be pleased with him, that the Prophet (sallallaahu alaihi wa sallam) used to perform Qunut in the morning prayer until he departed from this world is a weak Hadith according to the scholars of Hadith.
Source:
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah Vol. 2 Page 144