The Messenger of Allaah (peace and blessings of Allah be upon him) explained, with regards to mentioning Allaah (Dhikr) and supplicating to Him (Dua), everything that people need. He explained the best manner in which to engage in supplicating to Allaah and mentioning Him: what to say during the day (morning) as well as at night (evening), during prayers and after, when entering a mosque and at coming out of it, before sleeping, while sleeping (when awakening from sleep in the night before the time to wake up), and when waking up, when scared, before eating and after, when mounting a means of transport (vehicle), before travelling, when one sees something he likes, or when he sees something he does not like, when a calamity (disaster) befalls, at times of hardship and when sorrowed (anxious, sadness, grief), and at all circumstances. Following these (making dhikr and dua as taught by the Prophet) will certainly make a person achieve lasting happiness, total comfort, safety and steadfastness. He (peace and blessings of Allaah be upon him) also elucidated in great detail the varying degrees of mentioning Allaah and supplicating to Him, its kinds, manners, requisites and times. This book teaches you all these Duas and Dhikr that will help you achieve success in this life and the Hereafter.