BUT

But there are some instances in which Islam permits lying, if that serves a greater purpose or wards off a greater harm:

These cases include the following:

1- When a person is intermediating in order to bring about reconciliation between two disputing parties.

2- When a man speaks to his wife, or a wife to her husband, concerning matters that will increase the love between them.

3- War.

It was narrated from Umm Kulthoom bint 'Uqbah that she heard the Messenger of Allaah (peace and blessings of Allaah be upon him) say: "He is not a liar who brings about reconciliation among people, conveys good words and says good things."

Narrated by al-Bukhaari, 2546; Muslim, 2605

It was narrated that Asma' bint Yazeed said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: "Lies are not appropriate except in three cases: when a man speaks to his wife to please her, telling lies at times of war, and lying in order to bring about reconciliation between people."

Shaykh al-Albaani said: it is hasan.