I know more than you as to what there would be along with the Dajjal. There would be along with him two canals (one flowing with water) and the other one (having) fire (within it), and what you would see as fire would be water and what you would see as water would be fire. So he who amongst you is able to see that and is desirous of water should drink out of that which he sees as fire.  

حُذَيْفَةُ لأَنَا بِمَا مَعَ الدَّجَّالِ أَعْلَمُ مِنْهُ إِنَّ مَعَهُ نَهْرًا مِنْ مَاءٍ وَنَهْرًا مِنْ نَارٍ فَأَمَّا الَّذِي تَرَوْنَ أَنَّهُ نَارٌ مَاءٌ وَأَمَّا الَّذِي تَرَوْنَ أَنَّهُ مَاءٌ نَارٌ فَمَنْ أَدْرَكَ ذَلِكَ مِنْكُمْ فَأَرَادَ الْمَاءَ فَلْيَشْرَبْ مِنَ الَّذِي يَرَاهُ أَنَّهُ نَارٌ فَإِنَّهُ سَيَجِدُهُ مَاءً قَالَ أَبُو مَسْعُودٍ هَكَذَا سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ  

I know best what the Dajjal (Antichrist) will have with him. He will have with him a sea of water and a river of fire, and what you see as fire will be water and what you sea as water will be fire. If any of you who lives up to that time and desires water, he should drink from what he sees as fire, for he will find it water. Abu Mas’ud al-Badri said: I heard the Messenger of Allah ﷺ say in this way. (Using translation from Abū Dāʾūd 4315)   

حُذَيْفَةَ «أَنَا أَعْلَمُ بِمَا مَعَ الدَّجَّالِ مِنْهُ إِنَّ مَعَهُ نَهْرًا مِنْ نَارٍ وَنَهْرًا مِنْ مَاءٍ فَالَّذِي يَرَوْنَ أَنَّهُ نَارٌ مَاءٌ وَالَّذِي يَرَوْنَ أَنَّهُ مَاءٌ نَارٌ فَمَنْ أَدْرَكَ ذَلِكَ مِنْكُمْ فَأَرَادَ الْمَاءَ فَلْيَشْرَبْ مِنَ الَّذِي يَرَى أَنَّهُ نَارٌ فَإِنَّهُ سَيَجِدُهُ مَاءً»  

[Machine] Hudhaifah, I know what the Dajjal possesses. He has with him a river of fire and a river of water. And what people see as fire is actually water, and what people see as water is actually fire. So, whoever among you is able to understand this, let him drink from what he sees as fire, for he will find it to be water. Abu Mas'ood said, "And this is how I heard the Messenger of Allah ﷺ saying."  

حُذَيْفَةُ أَنَا أَعْلَمُ بِمَا مَعَ الدَّجَّالِ مِنْهُ «إِنَّ مَعَهُ نَهَرًا مِنْ نَارٍ وَنَهَرًا مِنْ مَاءٍ وَالَّذِي يَرَوْنَ أَنَّهُ نَارٌ مَاءٌ وَالَّذِي يَرَوْنَ أَنَّهُ مَاءٌ نَارٌ فَمَنْ أَدْرَكَ ذَلِكَ مِنْكُمْ فَيَشْرَبُ مِنَ الَّذِي يَرَى أَنَّهُ نَارٌ فَإِنَّهُ يَجِدَهَا مَاءً» فَقَالَ أَبُو مَسْعُودٍ وَهَكَذَا سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ