The passage discusses the meaning of certain Arabic words and their poetic usage, particularly in relation to light, darkness, and beauty. It mentions the poet Abu al-Tayyib al-Mutanabbi and his verses. The text delves into the etymology and grammatical forms of words like "labat" (جمع لبة), "ghada" (غضى), and "sawat" (صواة), explaining their meanings and how they are used metaphorically in poetry. It also touches upon the concept of "dhuwat al-waw" (ذوات الواو) and the use of "adwa'" (أضواء) as a plural. The passage concludes by referencing a Hadith about Islam having "dhuwa" (ضوا) and "mathara" (مثارا), and a definition of "sawa" (صوا) as an elevated part of the land.