Writing verses of Quran and erasing them with water, then drinking the water
Question

Some people write verses from the Quran and erase them with water, then drink the water. If I object to them, they say: It is the words of Allah and we are seeking healing by means of it. Is doing that permissible?
Praise be to Allah.Doing that is permissible. It is permissible for a person to write Quran with ink that it is permissible to drink, then to put the written paper in water and shake it, then drink it. Some of the early generations used to do that, and they would do it using vessels such as bowls and the like. If a person does that, he has a precedent for doing it. The evidence quoted for doing that is the general meaning of the verse in which Allah, may He be blessed and exalted, says (interpretation of the meaning):
{And We send down of the Quran that which is healing and mercy for the believers} [al-Isra’ 17:82].
So if healing is sought by means of the Quran in this manner, and it is tried and turns out to be beneficial, then it is included in the general meaning of this verse.
Shaykh Muhammad ibn ‘Uthaymin (may Allah have mercy on him).
(Al-Liqa’ al-Maftuh (p. 112).