71:27
إِنَّكَ إِن تَذَرْهُمْ يُضِلُّوا۟ عِبَادَكَ وَلَا يَلِدُوٓا۟ إِلَّا فَاجِرًا كَفَّارًا
Indeed, if You leave them, they will mislead Your servants and not beget except [every] wicked one and [confirmed] disbeliever.
Noah
إِنَّكَ إِن تَذَرْهُمْ يُضِلُّوا۟ عِبَادَكَ وَلَا يَلِدُوٓا۟ إِلَّا فَاجِرًا كَفَّارًا
Indeed, if You leave them, they will mislead Your servants and not beget except [every] wicked one and [confirmed] disbeliever.
Nearby ayahs help place verse 71:27 in sequence and meaning.
مِّمَّا خَطِيٓـَٔـٰتِهِمْ أُغْرِقُوا۟ فَأُدْخِلُوا۟ نَارًا فَلَمْ يَجِدُوا۟ لَهُم مِّن دُونِ ٱللَّهِ أَنصَارًا
Because of their sins they were drowned and put into the Fire, and they found not for themselves besides Allah [any] helpers.
وَقَالَ نُوحٌ رَّبِّ لَا تَذَرْ عَلَى ٱلْأَرْضِ مِنَ ٱلْكَـٰفِرِينَ دَيَّارًا
And Noah said, "My Lord, do not leave upon the earth from among the disbelievers an inhabitant.
رَّبِّ ٱغْفِرْ لِى وَلِوَٰلِدَىَّ وَلِمَن دَخَلَ بَيْتِىَ مُؤْمِنًا وَلِلْمُؤْمِنِينَ وَٱلْمُؤْمِنَـٰتِ وَلَا تَزِدِ ٱلظَّـٰلِمِينَ إِلَّا تَبَارًۢا
My Lord, forgive me and my parents and whoever enters my house a believer and the believing men and believing women. And do not increase the wrongdoers except in destruction."