The Zakah due on each partner has to do with his share regardless of that of his other partner

A 3: Each one of them has to pay his Zakah regardless of the amount of his partner, so if his share completes the Nisab (the minimum amount on which Zakah is due) according to what has been said in the answer of the second question, he would be obliged to pay his Zakah, if it does not complete the Nisab, he would not be obliged to pay Zakah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.