What is the requirement for the validity of hadith concerning supererogatory deeds?

Chapter on the Times When Prayer is Prohibited

Al-Mughni

Book of Prayer

Book 3 · Issue 2 · Bab 9

Open in Qurani

Primary text

The authenticity of the hadith is not a prerequisite for the permissibility or validity of supererogatory acts and virtuous deeds (Nawafil and Fada'il).