In addition to numerous psalms read every day, the entire psalter is read each week, and twice each week during Great Lent, and there are daily readings of other scriptures; also many hymns have quotes from, and references to, the scriptures woven into them. On the numerous fast days there is prescribed abstention from meat and dairy products, and on many fast days also from fish, wine, and the use of oil in cooking. Four fasting seasons are prescribed: Great Lent, Nativity Fast, Apostles' Fast and Dormition Fast. In addition, throughout the year most Wednesdays and Fridays, as well as Mondays in monasteries, are fast days.