Speak truthfully at all times.

This hadith emphasizes the importance of speaking truth and avoiding lies. It was narrated by Ibn Abi Mulaika, who heard 'Aisha reciting a verse from the Quran which states that when one invents a lie and carries it on their tongue, they will be accountable for it on the Day of Judgment. This hadith teaches us that we should always strive to speak truthfully in our daily lives, as lying can have serious consequences both in this world and in the hereafter. We should also remember that even if we do not get caught for telling a lie now, Allah knows all things and will hold us accountable for our actions on the Day of Judgment.