Tafsir
Tafsir of Al-Kahf 79
أَمَّا ٱلسَّفِينَةُ فَكَانَتْ لِمَسَـٰكِينَ يَعْمَلُونَ فِى ٱلْبَحْرِ فَأَرَدتُّ أَنْ أَعِيبَهَا وَكَانَ وَرَآءَهُم مَّلِكٌ يَأْخُذُ كُلَّ سَفِينَةٍ غَصْبًا
As for the ship, it belonged to poor people working at sea. So I intended to cause defect in it as there was after them a king who seized every [good] ship by force.
Tafsir Ibn Kathir (abridged)
Hafiz Ibn Kathir · English
Interpretations of why the Ship was damaged
This is an explanation of what Musa found so hard to understand, and the appearence of which he condemed. Allah showed Al-Khidr the hidden reasons, so he said, "I damaged the ship to make it faulty, because they used to pass by a king who was one of the oppressors, who
يَأْخُذُ كُلَّ سَفِينَةٍ
(seized every boat), i.e., every good, sound boat
غَصْباً
(by force.) `So I wanted to prevent him from taking this boat by making it appear faulty, so that its poor owners who had nothing else could benefit from it.' It was also said that they were orphans.
Tafsir text: quran.com and the House of Islam API. · Al-Kahf 18:79