Hadithcore
Musnad Ahmad 2003
sahih· Darussalam

It was narrated from Ibn "Abbas that a sheep belonging to Maimoonah died, and the Messenger of Allah (ﷺ) said:

“Why don"t you make use of its skin? Why don"t you tan it, because that will purify it?”

References1 variant
Arabic/English book
Book 25, Hadith 2003