Exercise 1: Guarding the Prayer Once we are performing the five obligatory prayers with regularity, then it is certainly worth our efforts to begin increasing extra prayers- especially the late-night prayers (tahajjud). Late-night prayer is one of the defining qualities of a salih (righteous) person, also called a wali (friend of Allah). Regarding late-night prayers, Fudayl b. 'Iyyad said that if a man was unable to do them, it was due to his wrong actions during the day. May Allah make us befitting to stand before Him, here and in the hereafter. Agenda to Change our Condition, Hamza Yusuf & Zaid Shakir, S. 46