The importance of sincerity in worship is emphasized in Islam, with sincere devotion to God being a fundamental requirement. Sincerity involves seeking nearness to God without any ulterior motives or desire for recognition from others. Sufi scholars elaborate on the significance of sincerity, emphasizing its purity and detachment from worldly concerns.
Imam Abdullah al Haddad, in a discourse with Shaykh Zubaydi, discusses the reasons behind a lack of spiritual experiences during remembrance of God. He explains the importance of purifying the heart, seeking guidance from a knowledgeable shaykh, and fulfilling necessary conditions. He also elaborates on the stages of remembrance, emphasizing the noblest stage of complete absorption in God.