A finite Arabic verb can incorporate temporal information into the statement, often dispensing with an additional explicit time expression.
وَالدَّلَالَةِ عَلَى أَحَدِ الْأَزْمِنَةِ الثَّلَاثَةِ عَلَى أَخْصَرِ وَجْهٍ
And indicating one of the three times in the briefest manner.
«Qāma» ordinarily presents a past event, whereas «yaqūmu» can refer to the present or future depending on context. Grammar contributes the temporal framework, but contextual indicators still matter.