You have what appears to be a BX cable penetrating and indoor wall to a garage. This needs fire stopping to meet code.
Here is Hilti’s drawing showing the wall assembly and how it can be fire stopped with their products. The optional metal conduit pictured would make it cleaner but also require disconnecting the cable.
Is it leading to an outdoor location? Or leading indoor? If so I would just use grey putty, or grey duct seal I think it’s called.
Monkey gunk is what we call it for some reason.
Leading to an indoor wall from a garage.
You have what appears to be a BX cable penetrating and indoor wall to a garage. This needs fire stopping to meet code.
Here is Hilti’s drawing showing the wall assembly and how it can be fire stopped with their products. The optional metal conduit pictured would make it cleaner but also require disconnecting the cable.
https://files-ask.hilti.com/original/eg/eg5q3zprsz.pdf