«الحملية تلتئم من أجزاء ثلاثة»
A categorical proposition consists of three components.
«أحدها المحكوم عليه، ويسمى موضوعاً»
The first is what is judged about, called the subject.
«والثاني المحكوم به، ويسمى محمولاً»
The second is what is predicated, called the predicate.
«والثالث الدال على الرابط، ويسمى رابطة»
The third indicates their connection, called the copula or link.
In “Zayd is standing,” Zayd is the subject, standing the predicate, and “is” indicates their affirmative connection.