Be honest except under special circumstances such as war or reconciliation efforts; communicate respectfully within relationships; protect oneself & others from harm etc..

This hadith from Umm Kulthum bint 'Uqbah explains that lying is generally not permissible in Islam, however there are certain exceptions to this rule. These exceptions include war, reconciling between people, and conversations between spouses. War can be a difficult situation where it may be necessary to lie in order to protect oneself or others from harm. Similarly, when trying to reconcile two parties it may be necessary to tell a white lie in order for the reconciliation process to succeed. Lastly, when talking with one's spouse it is important for both parties to feel comfortable expressing themselves without fear of judgement or criticism; therefore telling a white lie may be necessary at times in order for the conversation to remain positive and productive. In conclusion, while lying is generally not permissible according to Islamic teachings there are certain situations where telling a white lie can actually benefit all involved parties and lead them closer towards peace and harmony with each other.