وَمَآ أَدْرَىٰكَ مَا ٱلطَّارِقُ
Sentence structure
The first مَآ opens the question. أَدْرَىٰكَ is a perfect verb with attached كَ as object; the clause مَا ٱلطَّارِقُ completes what is being asked.
Ayah summary
The question draws attention to the greatness of At-Tariq.
وَمَآ — And what
Grammar: وَ coordinates; مَآ is a non-governing interrogative expression opening the question.
أَدْرَىٰكَ — can make you know
Grammar: أَدْرَىٰ is a third-person masculine-singular Form IV perfect with an understood subject; attached كَ is its second-person masculine-singular object.
مَا — what
Grammar: An interrogative pronoun beginning the clause that completes the object/content of أَدْرَىٰكَ.
ٱلطَّارِقُ — the night comer (is)
Grammar: ٱل is the definite article; طَّارِقُ is a nominative active participle functioning as the predicate of interrogative مَا.