[1]
This is the third place where the Prophet Jonah (peace be upon him) has been mentioned in the Quran. Before this he has already been mentioned in Surah Younus and Surah Al-Anbiya. (For reference, please see(Surah Younus, Ayat 98 )and (Surah Al-Anbiya, Ayats 87-88) and E.Ns thereof).
[2]Qira’at: All except for Nafieʻ, Ibn ʻAmer, Hafs, Abu Jaʻfar and Yaʻqub read it as: “. . . what they do .”