«كَثِيرُ الرَّمَادِ»
“One with much ash.”
The intended meaning of hospitality is reached through a sequence: abundant ash implies frequent fires; frequent fires suggest much cooking; much cooking suggests many guests; and many guests imply generosity and hospitality.
The links depend on customary social practices, rather than universal logical necessity. Because several associations intervene, this is a standard example of remote kināyah.