Tafsir
Tafsir of Al-Isra 66
رَّبُّكُمُ ٱلَّذِى يُزْجِى لَكُمُ ٱلْفُلْكَ فِى ٱلْبَحْرِ لِتَبْتَغُوا۟ مِن فَضْلِهِۦٓ ۚ إِنَّهُۥ كَانَ بِكُمْ رَحِيمًا
It is your Lord who drives the ship for you through the sea that you may seek of His bounty. Indeed, He is ever, to you, Merciful.
Tafsir Ibn Kathir (abridged)
Hafiz Ibn Kathir · English
Ships are a Sign of the Mercy of Allah
Allah tells us of His kindness towards His servants by subjugating for them ships on the sea. He makes it easy for them to use ships to serve their interests, seeking His bounty through trade between one region and another. He says:
إِنَّهُ كَانَ بِكُمْ رَحِيمًا
(Truly, He is ever Most Merciful towards you.) meaning, He does this for you out of His grace and mercy towards you.
Tafsir text: quran.com and the House of Islam API. · Al-Isra 17:66