What is the extent of the loss to be borne by the partner who owns one-third of half the profit (one-sixth), given that the other partner stated there was no loss, and that the current loss is the denial of payment for goods sold by one of the customers to the first partner?

Losses in a company are distributed among partners in proportion to each partner's share of the capital, not in proportion to the profit distribution. Thus, the owner of one-third of the capital bears one-third of the loss, and the owner of two-thirds bears two-thirds of it. This is the view of the majority of jurists.