Ask for permission before taking something that does not belong to you.

This hadith teaches us that we should respect the property of others and not take anything from them without their permission. The Prophet Muhammad compared milking someone else's cattle to taking food from someone else's storage without asking for permission first. He was emphasizing that we should always ask for permission before taking something that does not belong to us, even if it is something small like milk from a cow or goat. We must remember that everyone has a right to protect what belongs to them and we must respect this right by asking for permission before taking anything from another person.