فَسَبِّحْ بِحَمْدِ رَبِّكَ وَٱسْتَغْفِرْهُ ۚ إِنَّهُۥ كَانَ تَوَّابًۢا ۝٣ What does فَ mark in فَسَبِّحْ?

Surah An-Nasr — Part 1

• A vocative
• A genitive relation
• The result and answer of the condition
• An object pronoun