Cotton is a plant that sprouts out white fibers from which clothes are made. Corrosive is one of the names of cotton, which is furs. In the hadith: That he was shrouded in three Yemeni Korsof; means cotton. A person who is Takarsaf means got confused.
Narrated Aisha that Allah’s messenger was shrouded in three cotton garments of white Yemeni stuff from Sahul (This is said to have been cither the place where the cloth was woven, or the place from which it was exported), among which was neither a shirt nor a turban. (Bukhari and Muslim)