Does kinship include all relatives or fathers and sons, brothers and sisters and their children, uncles,…

Answer

In the name of Allah, there is no doubt that all humans shares the kinship of relatedness to Eve, because humanity started from that believing woman, the mother of all the prophets, messengers and Imams (PBUT) except for her husband (PBUH). However, there are special rulings that are proven for those who share a womb to the eight grandparents mentioned in the inheritance unit. This kinship type is referred to by Allah's saying "and the possessors of relationships are nearer to each other". There is a third meaning of kinship, which is the one that the common people understand. It is when one says X is my relative, and perhaps it includes uncles and maternal uncles and their common children. In the case of establishing a religious ruling, such as a will, the sharia jurist needs to follow a presumption that determines what is meant. Allah is the Guide and Knowing.