In the printed explanatory discussion, a thani of sheep has completed one year, while jadha‘ is described as an animal of about six months.
The stated preferred view is that a thani is taken in zakat, not merely a six-month jadha‘. This is about suitability of the animal paid; it does not independently determine which animals count toward the herd threshold.
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Zakat on Sheep and Goats: Brackets, Liability, and Discharge
In the printed explanatory discussion, a thani of sheep has completed one year, while jadha‘ is described as an animal of about six months.
The stated preferred view is that a thani is taken in zakat, not merely a six-month jadha‘. This is about suitability of the animal paid; it does not independently determine which animals count toward the herd threshold.