It is narrated from Sayyidah Umm Kulthum (may Allah be pleased with her); she said: I never heard the Messenger of Allah (peace and blessings be upon him) permit lying except in three situations; he (peace and blessings be upon him) used to say: I do not count it as lying: "A man who makes peace between people; a man who speaks in war; and a man who speaks to his wife, and a wife who speaks to her husband."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21656