ציטירנדיקער פּירוש אויף רות 1:8

AND ALL HIS DAUGHTERS. This refers to his daughter and his son’s daughter.⁹⁶Since Jacob had. only one daughter, Dinah, the expression “and his daughters” in the plural must include some other person. Ramban first suggests that the term includes his granddaughter, Serach the daughter of Asher. See also my Hebrew commentary, pp. 211-2. Now it is possible that his daughters-in-law are also included in this category, for in Scripture they too are called “daughters,” or as the saying of the Sages has it:⁹⁷Bereshith Rabbah 84:19. “A person does not refrain from calling his daughters-in-law ‘daughters.’” So did Naomi say to her daughters-in-law: Go, turn back, my daughters;⁹⁸Ruth 1:8; 1:12. Nay, my daughters;⁹⁹Ibid., Verse 13. Go, my daughter.¹⁰⁰Ibid., 2:2. It is nothing but an expression of love, just as, Hearest thou not, my daughter?¹⁰¹Ibid., Verse 8. This was said by Boaz to Ruth and can certainly not indicate the relationship of daughter or daughter-in-law.