Not graded
Bulugh al-Maram 306
وَعَنْهُ أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -{ كَانَ لَا يَقْنُتُ إِلَّا إِذَا دَعَا لِقَوْمٍ , أَوْ دَعَا عَلَى قَوْمٍ } صَحَّحَهُ اِبْنُ خُزَيْمَةَ . 1
1 - صحيح . رواه ابن خزيمة (620) .
Narrated [Anas (RA)]:
The Prophet (ﷺ) never used to supplicate [i.e. Qunut in the prayer) except when he prayed for a people or when he prayed against a people. [Ibn Khuzaimah graded it Sahih (authentic)].
Cited in Bulugh al-Maram (No. 306).