Silsilah as-Sahihah 2797 — Cases where lying is permitted

Narrated from Sayyidah Umm Kulthum bint Uqbah (may Allah be pleased with her), she said: The Prophet (peace and blessings of Allah be upon him) permitted lying in three situations: in war, for reconciliation between people, and when a husband speaks with his wife. And in another narration: when a man speaks with his wife and a wife speaks with her husband.