وهو أي مقتضى الحال يختلف؛ فإن مقامات الكلام متفاوتة
The requirements of a situation vary, because the rhetorical stations of speech vary.
A maqam is a communicative setting or rhetorical station inviting a certain mode of expression. Hal identifies the relevant condition within that setting. The commentary explores how these ideas overlap and differ; they should not be treated as unrelated labels.
Introducing an unknown person and referring back to an already identifiable person are different stations. The speaker may consequently choose indefinite or definite reference.