At 400, four are due; at 500, five; and at 600, six. An increase that does not complete the next hundred does not create a new required animal.
For instance, 450 and 499 remain at four; 500 becomes five. Similarly, 510 and 599 remain at five, and 600 becomes six.
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Zakat on Sheep and Goats: Brackets, Liability, and Discharge
At 400, four are due; at 500, five; and at 600, six. An increase that does not complete the next hundred does not create a new required animal.
For instance, 450 and 499 remain at four; 500 becomes five. Similarly, 510 and 599 remain at five, and 600 becomes six.