What is the brother's right over his brother and sister within a family context that achieves "maintaining kinship ties"?

A brother has the general rights of Muslims, in addition to his specific right to kinship and kindness from you. Islam encourages maintaining ties of kinship and warns against severing them, considering their severance as corruption on earth. The definition of maintaining ties and severance is determined by custom. Maintaining ties can be achieved through kind words, gifts, financial support, and correspondence.