A partner whose personal share is below nisab may still contribute proportionately when the total joint stock exceeds the threshold. In livestock cases, joint treatment can sometimes increase or reduce what an individual effectively bears.
The point is that Islamic law can sometimes attach obligations to a collective pool as a distinct unit.
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Juridical Person in Islamic Law: Waqf, Bait-ul-Mal and Joint Stock
A partner whose personal share is below nisab may still contribute proportionately when the total joint stock exceeds the threshold. In livestock cases, joint treatment can sometimes increase or reduce what an individual effectively bears.
The point is that Islamic law can sometimes attach obligations to a collective pool as a distinct unit.