Translation:

43. The son replied: "I will be take myself to some mountain: it will save me from the water." Noah said: "This day nothing can save from the Command of Allah any but those on whom He hath mercy!" and the waves came between them and the son was among those overwhelmed in the Flood.

Notes (Tafseer)

1537. The Unbelievers refuse to believe in Allah, but have great faith in material things! This young man was going to save himself on mountain peaks, not knowing that the peaks were themselves being submerged.