That looks like a power steering line. The sub frame and ground are covered in oil, what system is failing, the power steering or the transmission?
Looks more like bent steel to me. Maybe an anti roll bar?
I tried enlarging it and still couldn’t tell what it is, but I would not start the car until I figured it out. If it’s the drain for the AC system you’d be fine. If it’s a brake line you’d be screwed.
Try soaking some of the fluid up with a clean white rag, see what color and lubricity it is, and post back. That might help identify what’s hanging down. A closer photo would help too.
It’s hard to tell whether the end of the rod is on the ground behind the puddle or is above the puddle. I could convince myself that there is a drop on the end of the rod, so it could be a fluid-carrying tube.
It’s impossible to tell from the photo. But I thought that the color of the puddle might at least be a start on a direction to take.
Truth is, someone on-site will need to take a closer look. If it were mine I’d lift one side up onto jackstands, grab a worklight and a piece of cardboard, and slide under and look. It might just be a branch stuck under there.