The ruling on taking a full ritual bath for the fasting person?

Question : A man came to me today at the midday prayer, and he said that it was extremely hot and he wanted to take a full ritual bath to cool his body. He consulted some ignorant people, and he asked them, "Is it permissible for me to take a full ritual bath to relieve myself from the heat?" So this person, who considers himself a scholar, said to him, "It is not permissible, and if you do that, your fast is invalid." So this poor man remained with his throat dry, enduring the heat, based on the fatwa of this ignorant person.

Answer : And I warn my brothers here from this great trial, which is the trial of a person becoming a reference for people who seek his fatwa. Because some people, by Allah, are tried and tested; he thinks that people come to him and he issues fatwas, whether right or wrong. And this is among the trials and tribulations of this world: for a person to love this matter, for people to turn to him for fatwa when he is not qualified. So a person should fear Allah for himself and know that if he issues a fatwa on something, the meaning of that is that he is saying something about Allah that he has issued as a ruling. So either he is correct or he is mistaken, and he is not qualified for independent legal reasoning. As for the one who exercises independent legal reasoning and makes a mistake, Allah forgives him and he has the reward of the effort, but he is deprived of the reward of being correct. I say that it is permissible for a person to take a full ritual bath to cool his body from the heat. And it was narrated from the Prophet (peace and blessings be upon him) that he was at al-'Araj, which is the name of a place, from thirst or from the heat. So this is the action of the Prophet (peace and blessings be upon him).
And Ibn 'Umar used to wet his garment while he was fasting to cool himself; he would wet it and wear it. And Anas ibn Malik had something like a pool that he would fill with water and immerse himself in while he was fasting in order to cool down. So it is permissible for the fasting person to take a full ritual bath, to wet his garment, and to rinse his mouth if his throat is dry. And it is also permissible for him to sit near the air conditioning to cool himself, and to thank Allah for this blessing where Allah has made praise easy in this time for these things that moderate the weather and facilitate worship. For this is among the blessings of Allah that we are obligated to thank Him for. And the people before this used to find great hardship in the heat, until one of them would sleep under a water skin that would drip water on him. But now, praise be to Allah, when a person enters his house, he finds that the coolness comes to him from the door, and he passes the whole day without being affected by sweat. And this is among the blessings for which we praise Allah for making it easy for us, and we ask Allah to grant us the ability to be grateful for it. And the important thing is that if a person does what facilitates his worship, then there is nothing wrong with it, and it is among the blessings of Allah upon a person.