Giving a Container as a Gift Not the Contents and Giving the Contents Not the Container

1. You have a bottle of oil. You gave the bottle to someone, but not the oil inside the bottle. This giving or gift is not valid.
2. Similarly, you gave a container as a gift. The container has something inside. The gift of the container whilst having something inside is not valid.
3. Even if the one to whom the gift was made takes possession of the bottle or the container, he will not become the owner of the bottle or the container.
4. He will only become the owner when you empty the bottle of the oil and the container of its contents and then he takes possession of the empty bottle or container.
5. Yes, if you gave the person the oil, not the bottle, or only the contents of what is in a container, not the container, and he takes possession of the bottle or container with the understanding of emptying the bottle or container and returning the bottle or container, then this gift of the oil or contents of the container is valid. He becomes the owner of the oil or whatever was in the specific container in this way.
6. To summarize, when giving any container, it should be emptied of its contents and given. Without emptying the contents, the gift will not be valid.

(Behshti Zewar)