There is no difference between a daughter and a daughter-in-law as that between one's ownself and a son. I do not find any fear in it-for by it purity will be proved.
स्नुषायां दुहितुर्वापि पुत्रे चात्मनि वा पुनः। अत्र शङ्कां न पश्यामि तेन शुद्धिर्भविष्यति॥