In Petirath Moshe, the Assumption of Moses, a story about Michael and Samael arguing over the dead body of Moses, the name Sam is used here instead of the name Samael.
This story is referred to in Jude;
Now when Michael, one of the chief angels, was fighting against the Evil One for the body of Moses, fearing to make use of violent words against him, he only said, May the Lord be your judge. Jude 1:9