How can I get lava in a bucket without taking the source block?

I am trying to make a moat out of lava, but I can't get the lava in the bucket. Do I have to take the source block?

1 Answer

You can't. You have to take the source block.

Unlike water, lava doesn't ever create new source blocks. The only way to get source lava is to take it from somewhere else, and the only way to get flow lava is naturally flowing from source lava since flow lava can't be picked up.