In surah Kahf, there is a parenthetical clause that refers to the Prophet (sws) saying "Inshā Allah". Can you clarify the statement in the overall context of the surah?
The referred to utterance of the Prophet (sws) does not have any special significance in this context. This is just like our own saying InshāAllah in our lives. When we say IshāAllah we are actually handing our affairs over to Allah and we want not to claim something to happen for ourselves and declare that things happen ultimately only if the Almighty lets them to. The Messengers of Allah are the most careful persons in this regard. Therefore it is not a strange utterance of the Prophet (sws). Moreover it does not cast a special effect on the overall theme of the Surah.