A commentary on the various Nuanced (Gharib = rare, curious, obscure) sentences or words in the Quran. Ghulam Tha'lab of Baghdad explicates them in this book, a wonderful 4th century summarized commentary on the vocabulary of the Quran. Abu Omar Muhammad bin Abd al-Wahid al-Baghdadi al-Zahid, known as Ghulam Tha'lab of Baghdad (ca. 261/875-345/957), was a linquist and scholar with an extensive knowledge of Arabic words and their usage.