Is it permissible to perform qunut in supererogatory prayers, whether in Qiyam al-Layl or the supererogatory prayers of the day?

The scholars disliked the Qunut (supplication while standing) in supererogatory prayers other than the prescribed ones, whether during the day or night, except for the Witr prayer. This is because there is no narration from the Prophet, peace and blessings be upon him, regarding its practice in such prayers. It is also disliked in the funeral prayer, in supererogatory prayers for which congregational prayer is sunnah, and in vows.