لأن الإفادة والاستفادة موقوفة عليه، ولذلك يقدم بحث الدلالة والألفاظ في كتب المنطق
Because conveying and receiving understanding depend on it, the discussion of signification and words is placed first in books of logic.
Ifādah is conveying a meaning; istifādah is gaining a meaning from another. If a speaker uses “human” in one sense and a listener hears another, even an otherwise orderly argument may be misunderstood.
The next topic is therefore dalālah (signification): how knowing one thing points to another, and how an expression signifies meaning. Its formal divisions are the subject of the following lesson.