Sorry, this is incorrect.
The correct answer is : After crossing the sea quickly and leave it as is
Ref: Surah Ad-Dukhan 44:24
Arabic:
وَٱتْرُكِ ٱلْبَحْرَ رَهْوًا ۖ إِنَّهُمْ جُندٌۭ مُّغْرَقُونَ ٢٤
Translation:
And leave the sea parted, for they are certainly an army bound to drown.”
Tafseer / Explanation:
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Allah commands Musa to leave the sea parted and open after crossing.
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This was to allow Pharaoh and his army to enter and face destruction.
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The command shows Allah’s perfect plan and control over every event.
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It highlights how Allah uses the same path of safety for believers as a trap for disbelievers.
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The verse reminds that Allah’s power can turn deliverance for one group into doom for another.