Whoever sees in a dream that he has drowned is in the Fire, because of the words of God Most High:
مِّمَّا خَطِيٓـَٔـٰتِهِمْ أُغْرِقُوا۟ فَأُدْخِلُوا۟ نَارًا فَلَمْ يَجِدُوا۟ لَهُم مِّن دُونِ ٱللَّهِ أَنصَارًا
“Because of their sins they were drowned and put into the Fire, and they found not for themselves besides Allāh [any] helpers.”
Quran 71:25 · Saheeh International
Drowning is a matter in which God Most High finds no pleasure.
Whoever sees that he is drowning is committing error by perpetrating many sins. If he dies while drowning, it is feared that he will fall into disbelief, or he will drown in a heretical innovation. If he drowns in the sea but floats on top of the water, moving his hands and feet, sinking once and floating up again, he will be immersed in his worldly affairs, become rich and enjoy a period of power. If he comes out without drowning, his worldly affairs will lead him to the betterment of his religion. If he is wearing green clothes, he will attain knowledge and piety. If he drowns and sinks to the bottom of the sea, the ruler will become angry with him or punish him, and he will die under that punishment. If a disbeliever sees that he drowned in a sea, he will believe, because of the words of God Most High:
۞ وَجَـٰوَزْنَا بِبَنِىٓ إِسْرَٰٓءِيلَ ٱلْبَحْرَ فَأَتْبَعَهُمْ فِرْعَوْنُ وَجُنُودُهُۥ بَغْيًا وَعَدْوًا ۖ حَتَّىٰٓ إِذَآ أَدْرَكَهُ ٱلْغَرَقُ قَالَ ءَامَنتُ أَنَّهُۥ لَآ إِلَـٰهَ إِلَّا ٱلَّذِىٓ ءَامَنَتْ بِهِۦ بَنُوٓا۟ إِسْرَٰٓءِيلَ وَأَنَا۠ مِنَ ٱلْمُسْلِمِينَ
“And We took the Children of Israel across the sea, and Pharaoh and his soldiers pursued them in tyranny and enmity until, when drowning overtook him, he said, "I believe that there is no deity except that in whom the Children of Israel believe, and I am of the Muslims."”
Quran 10:90 · Saheeh International
Whoever sees that he died drowned in water, his enemy will plot against him. Drowning in clear water is being immersed in great wealth.