פּירוש אויף במדבר 27:11

לשארו הקרוב אליו ממשפחתו TO HIS KIN THAT IS NEXT TO HIM OF HIS FAMILY — The term משפחה used in connection with inheritance denotes kinship only on the father’s side (Sifrei Bamidbar 134:3; Bava Batra 119b).

AND IT SHALL BE UNTO THE CHILDREN OF ISRAEL A STATUTE OF JUDGMENT. The meaning thereof is that this judgment should be for all [future] generations, and not only for now when they inherited the Land [hence the expression “a statute, i.e., a permanent one, for all the children of Israel in all future generations”].

ונתתם את נחלתו לשארו הקרוב אליו ממשפחתו, “and you will give his inheritance to the closest (surviving) member of his family.” This verse is the source of the sages in Baba Batra 11 ruling that the husband inherits his wife. The sages use the letter ל in the word ונתתם and the letter ו in the word לשארו to construct a new word, i.e., לו, which is the basis for assigning the wife’s property to the husband upon her death. The word שארו is understood as “his wife.”