What is the validity of a partnership established between a founder and his brothers, whereby he included them as partners in name and effort without financial contribution, and do the profits generated after the founder's death revert to the heirs or to the remaining partners?

If a person grants a portion of his company to his brothers while he is in good health, the grant is valid, and his brothers become partners with him according to the specified proportions. However, if the grant is made during a death-threatening illness (marad al-mawt), it takes the ruling of a will, and its provisions apply, such as its disbursement from one-third of the estate and the need for the heirs' approval. If the grant is valid, the brothers' share of the profits is calculated starting from the date of their entry into the company.