The study aims to collect and study the poetic evidence and clarify it according to the grammatical rule. The research discusses the employment of the poetic witness in the book of Al-Saad and the Safir Alifadah for Alm Al-Din Al-Sakhawi. Why did Al-Sakhawi employ this witness? How did he employ it? What is the purpose of this employment? How did he establish his argument in emphasizing the issue? And, how Al-Sakhawi employs the verse in a way that suits the grammatical rule. Al-Sakhawi raises the issue that is consistent with the rules of protest set by the grammarians and presented their opinions. In his views, he is close to the Baghdadi school, this school takes the opinions of scholars regardless of their sects, and the majority of the poetic verses mentioned by Al-Sakhawi, are unknown as to who said or quoted them. He returned to the grammarians of Kufa and Basra, using their books such as Al-Kisa'i, Al-Asma'i, Yunus bin Habib, and other grammarians. This research included two demands, the first requirement was the adverb and the second requirement was the herald.
Keywords: the poetic witness, the travel of happiness, the ambassador of benefit, the science of religion Al-Sakhawi, the grammar