On Extending the Du’aa al-Qunoot in Witr
Questioner: Okay, is it allowed for the du’aa al-qunoot … because in the sunnah it is reported as being before the rukoo’, if we do it after the rukoo’ that would be …
Al-Albaani: … that would be following ’Umar etc., but the sunnah is dearer to us.
Questioner: Yes, doing it before the rukoo’ is better?
Al-Albaani: Yes.
Questioner: Okay, if we added an [additional] supplication to the du’aa al-qunoot which has been reported [in the Sunnah], is it allowed? The du’aa al-qunoot well-known as, ‘Allaahummahdini fi man hadaita …,’ if I add other supplications to that of my own accord?
Al-Albaani: No, it’s not allowed, except rarely.
Questioner: Only rarely.
Al-Albaani: Yes.
Al-Hudaa wan-Noor, 326.
Also see here.
The Albaani Site 