Ruling on eating the testicles of halal-slaughtered animals, and eating crabs

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It is permissible to eat ostrich meat if it is slaughtered properly
Are there any types of seafood that Muslims are not permitted to eat?

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Using hormones to increase the yield of crops and improve them
It is permissible to eat ostrich meat if it is slaughtered properly
Are there any types of seafood that Muslims are not permitted to eat?

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