Take into account a single witness when making decisions or judgments; Trust in the truthfulness and accuracy of a single person's testimony if they are reliable and trustworthy; Weigh all evidence carefully before coming to a conclusion; Make sure justice prevails in any situation or decision making process.

This hadith is about the power of an oath with one witness. Umar ibn Abd al-Aziz wrote to Abd al-Hamid ibn Abd ar-Rahman ibn Zayd ibn al-Khattab who was the governor of Kufa and instructed him to pronounce judgement on the basis of an oath with one witness. This hadith teaches us that we should take into account a single witness when making judgements and decisions as it can be just as powerful as multiple witnesses. It also teaches us that we should trust in the truthfulness and accuracy of a single person's testimony if they are reliable and trustworthy. We must also remember that justice must always prevail in any situation or decision making process, so it is important to weigh all evidence carefully before coming to a conclusion.