«عند المتكلم»
According to the speaker.
Suppose a person really believes spring itself produces vegetation and says «أنبت الربيع البقل». The wording may assign the action to what that speaker sincerely regards as its agent. The classification must consider the speaker's apparent belief, not merely what an outside evaluator knows.
This does not make the speaker's causal belief objectively correct. Correspondence to the speaker's belief and correspondence to external reality are separate questions.