The document discusses how remembrance of Allah leads to tranquility of the heart. It notes that those who believe and find rest in remembering Allah will find peace in their hearts. It encourages remembering Allah to attain a peaceful life and avoid harming oneself. The document references a hadith stating that remembering and forgetting Allah are similar to life and death, and that seeking Allah through remembrance leads to success. It notes different forms of remembrance beyond verbal acts like tasbih and includes righteous actions done for Allah's sake.