كَثِيرُ الرَّمَادِ
A person of abundant ashes.
Abundant ashes suggest frequent fires, extensive cooking, numerous guests, and eventually generosity. The several intervening links make this an example of the more extended inferential type of kināyah, talwīḥ.
Stopping at “generous” is not a complete analysis. Explain each mediating association and check that the chain is intelligible within its cultural and contextual setting.