Mā is additional in both examples. Idhā is non-jussive; matā is jussive, so the verbs of its conditional and response are jussive.
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Compare Idhā Mā and Matā Mā
Additional Particles: Seven Forms, Emphasis and Syntactic Case
Mā is additional in both examples. Idhā is non-jussive; matā is jussive, so the verbs of its conditional and response are jussive.