Is it necessary to continue bathing daily with water used for Ruqyah permanently, and is this considered sufficient protection against sorcery, envy, and the evil eye?

There is no obligation to bathe with water over which Quranic verses have been recited every day or for a specific period. It is permissible to bathe with it, and it contains benefit, God willing. We advise adherence to the remembrances (dhikr) established from the Prophet, peace and blessings be upon him, such as the morning and evening remembrances and seeking refuge with the Mu'awwidhat (Surahs Al-Falaq and An-Nas); these are a protection from envy. Strive in supplication for what you need, for it is one of the greatest weapons of the believer, and do not be impatient for the answer, for God responds to His servant as long as he does not rush.