Salary deducted or added in Capital A/c of Partnership firm

See, there are two ways to handle payment of salary in accounts :

1) If you have paid the salary ( either by bank or by cash )  -- > then debit the salary account (indirect expenses) and credit the relevant bank account / cash account.

2) If you haven't paid the salary, but you are booking it as an expense -- > then debit the salary account (gets booked as an expense in the PnL), and credit the partner's capital account. Essentially, if salary is not paid, then it is a form of a liability of a firm which hasn't been paid yet, and since the firm is liable to the partners, crediting the capital account means that the firm owes this much amount to the partners ( essentially salary) .

Other treatment could be to keep it as outstanding liabilities, or salary payable in liabilities side of the balance sheet.

Hope this helps!