YOU SAID:

the rug is very dirty because there is mud on it

INTO JAPANESE

敷物は泥が付いているのでとても汚れています

BACK INTO ENGLISH

The rug is very dirty as it has mud on it

INTO JAPANESE

敷物には泥が付いているのでとても汚れています

BACK INTO ENGLISH

The rug has mud on it so it's very dirty

INTO JAPANESE

敷物には泥が付いているのでとても汚れています

BACK INTO ENGLISH

The rug has mud on it so it's very dirty