Masruq narrates: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: In this, the repentance of a prophet has been mentioned. The narrator said: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) would not perform the prostration of recitation in it, meaning Surah Sad.
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are thiqat (trustworthy) and are the narrators of the Sahih.