Chapter: It is recommended to say qunut in all prayers if a calamity befalls the Muslims – and refuge is sought from Allah (regarding that). It is recommended to say qunut in Subh at all times. And the clarification that it is to be said after raising the head from bowing in the final rak`ah, and it is recommended to say it out loud
Authentic
hadith of Sahih Muslim
Sahih Muslim 677a
Anas b. Malik reported that the Messenger of Allah (ﷺ) invoked curse in the morning (prayer) for thirty days upon those who killed the Companions (of the Holy Prophet) at Bi'r Ma'una. He cursed (the tribes) of Ri'l, Dhakwan, Lihyan, and Usayya, who had disobeyed Allah and His Messenger (ﷺ). Anas said:
Allah the Exalted and Great revealed (a verse) regarding those who were killed at Bi'r Ma'una, and we recited it, till it was abrogated later on (and the verse was like this):, convey to it our people the tidings that we have met our Lord, and He was pleased with us and we were pleased with Him".
‘Abdullāh ibn ‘Umar (may Allah be pleased with him) reported that he heard the Messenger of Allah (may Allah's peace and blessings be upon him) on raising his head from bowing in the final Rak‘ah of the Fajr prayer, say: "O Allah, curse so-and-so and so-and-so", after saying: "Allah hears those who…