(An-Naml) 27 : 1
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ طس ۚ تِلْكَ آيَاتُ الْقُرْآنِ وَكِتَابٍ مُبِينٍ
Thwa Seen. These are the verses of a Clear and Manifest Book for repeated reading.
Thwa Seen denotes Lord’s conversation at mount Sina with Moses. See explanation 16: 44; 26: 1 and 195-196.