The Prophet ﷺ used to perform prostration in Surah Sad.
حدثنا ابن فضيل حدثنا ليث عن مجاهد
كان النبي ﷺ يسجد في ص
No references are available.
Its isnad is sahih. Ibn Fudayl is Muhammad bin Fudayl bin Ghazwan. Layth is Ibn Abu Salim. The hadith is an abridgment of 3387.