وَقَالَ نُوحٌ رَّبِّ لَا تَذَرْ عَلَى ٱلْأَرْضِ مِنَ ٱلْكَـٰفِرِينَ دَيَّارًا Qur’an Nuh (71:26)Waq a la noo h un rabbi l a ta th ar AAal a alar d i mina alk a fireena dayy a r a n
The Flood was sent in order to purge all sin. The prayer of Noah is not vindicfive. It simply means, "Cut off all the roots of sin". See next note.