43:17 wa idhaa bush-shira aHaduhum bimaa Daraba lir raHmaani mathalan Zal-la wajhuhuu muswad-daw wa huwa kaZiym

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Ahmed Raza Khan: Mohammed Aqib Qadri:
And if one of them is given the glad tidings of what he professes regarding the Most Gracious, his face blackens and he is mournful!

Yusuf Ali:
When news is brought to one of them of (the birth of) what he sets up as a likeness to (Allah) Most Gracious, his face darkens, and he is filled with inward grief!

Pickthal:
And if one of them hath tidings of that which he likeneth to the Beneficent One, his countenance becometh black and he is full of inward rage.