فَإِذا رَكِبوا فِي الفُلكِ دَعَوُا اللَّهَ مُخلِصينَ لَهُ الدّينَ فَلَمّا نَجّاهُم إِلَى البَرِّ إِذا هُم يُشرِكونَ

When they board a vessel, they call upon God, devoting their prayer sincerely to Him. However, once He delivers them safely to land, they attribute partners to Him.