Speak truthfully and honestly when giving testimony or taking an oath.

This hadith speaks about the importance of taking an oath in a court of law. It is narrated by Ibn Abu Mulaika and Ibn 'Abbas that the Prophet (ﷺ) gave his verdict based on the defendant's oath. This means that if a person swears an oath in court, then it is taken as truth and justice is served accordingly. This hadith teaches us to be honest and truthful when we are giving our testimony in court or any other place where our words can have legal implications. We should also remember that lying or making false statements can have serious consequences, so it is important to always speak truthfully and honestly when giving testimony or taking an oath.