Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
ahmad-zuhd:280ʿAbdullāh > Bī > Abū Muʿāwiyah > al-Aʿmash > Mujāhid > ʿUbaydullāh b. ʿUmayr

[Machine] If the man is from the people of Noah, when he meets him, he will strangle him until he falls unconscious. Then, when he wakes up, he will say, "Oh Lord, forgive my people, for they do not know."  

الزهد لأحمد:٢٨٠حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنَا أبِي حَدَّثَنَا أَبُو مُعَاوِيَةَ حَدَّثَنَا الْأَعْمَشُ عَنْ مُجَاهِدٍ عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَيْرٍ قَالَ

إِنْ كَانَ الرَّجُلُ مِنْ قَوْمِ نُوحٍ لَيَلْقَاهُ فَيَخْنُقُهُ حَتَّى يَخِرَّ مَغْشِيًّا عَلَيْهِ قَالَ فَيَفِيقُ حِينَ يَفِيقُ وَهُوَ يَقُولُ رَبِّ اغْفِرْ لِقَوْمِي فَإِنَّهُمْ لَا يَعْلَمُونَ