The document discusses the virtues and significance of performing supererogatory or nawafil prayers in addition to obligatory prayers according to Islamic teachings. It notes that nawafil prayers make up for any deficiencies in obligatory prayers, bring one closer to God, and are a source of light, elevation and gratitude. The document outlines different types of nawafil prayers including specific sunnah prayers and non-stressed prayers, and notes that it is preferred to elongate nawafil prayers and sitting is allowed.