Remain mindful of your words even during moments of emotion like anger

The Prophet Muhammad (PBUH) taught us that it is not necessary to make a vow when we are angry. A vow can be made in order to express our feelings or emotions, but it should not be taken seriously if it was made in anger. Instead, the expiation for such a vow should be the same as an oath. An oath can also be taken in moments of anger, but this too should not be taken seriously and requires expiation afterwards. This teaches us that we must remain mindful of our words even when we are feeling strong emotions like anger so that we do not make promises or commitments which cannot be fulfilled later on due to lack of sincerity or seriousness at the time of making them.