"(Sailing) under Our eyes," like His saying: "Indeed, I am with both of you; I hear and I see."
"A reward for him who had been denied (kufira)," meaning: A reward for Noah, whose people denied him and rejected what he brought, is that Allah saved him in the ship.
﴿تجْرِي بأعيننا﴾ كَقَوْلِه: ﴿إِنَّنِي مَعَكُمَا أَسْمَعُ وَأَرَى﴾.
﴿جَزَاء لمن كَانَ كفر﴾ جَزَاء لنوحٍ كفره قوْمُه، وجحدوا مَا جَاءَ بِهِ إنجاء اللَّه إِيَّاه فِي السَّفِينَة