It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that he said: It reached Sayyidah Safiyyah (may Allah be pleased with her) that Sayyidah Hafsah (may Allah be pleased with her) had said: The daughter of a Jew. So she began to weep. The Prophet (peace and blessings be upon him) came to her while she was weeping, and he (peace and blessings be upon him) asked: "What is the matter with you?" She said: Hafsah said to me that I am the daughter of a Jew. So the Prophet (peace and blessings be upon him) said to her: "You are the daughter of a prophet, your paternal uncle is also a prophet, and you are married to a prophet. So what can she boast over you about?" Then he said: "Hafsah! Fear Allah."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20557