Purification is the process of purifying oneself from bad behaviors and sins, and strengthening good values and virtues. This helps to achieve personal integrity and reach the level of charity. One of the useful things in the process of purification is to read the books of targheeb and intimidation, such as Kitab al-Targheeb wa al-Tarheeb by al-Mundhiri or Sahih al-Targheeb wa al-Tarheeb by al-Albani. . Additionally, read books dealing with issues of death and the afterlife, such as Ibn al-Qayyim's Kitab al-Haadi al-Souh, Kitab al-Thakir al-Firah (The Fear of Hell ) of Ibn Rajab and Kitab of al-Qurtubi. al-Tadhkir (The Book of Remembrance) plays an important role in improving the internal state and promoting integrity.