They must have cooperated with their father. In time, they helped him build the ark, and then they went into it. With what goal in mind?
تُوضِحُ ٱلْآيَةُ فِي ٱلتَّكْوِين ٧ :‏ ٣ أَنَّهُمْ بِإِدْخَالِ ٱلْحَيَوَانَاتِ إِلَى ٱلْفُلْكِ سَاهَمُوا فِي « ٱسْتِحْيَاءِ نَسْلٍ عَلَى وَجْهِ كُلِّ ٱلْأَرْضِ » .‏