Question 166: Some people of different nationalities in Al-Masjid Al-Nabawee (the Prophet’s Mosque in Madeenah) write down Aayaat (Qur’aanic verses) on a paper, put it in water, and then drink it to facilitate memorizing Qur’aan. They claim that this helps them to easily memorize the Qur’aan; however, we do not know whether this is an act of Bidd`ah (innovation in religion) or not? What is the Islaamic ruling on this?
Answer: This act is an act of Bidd`ah. It has neither been reported from the Prophet (peace be upon him), nor from his Companions (may Allah be pleased with them) according to our knowledge... read more here.