جبان الكلب
A person whose dog is timid.
The expression imagines a dog so accustomed to frequent visitors that it does not threaten strangers. The familiar presence of guests is then taken as evidence of hospitality and generosity.
The overt adjective describes the dog, not the host. The intended quality belongs to the host, and several customary associations must be understood; this is why the example belongs to talwīḥ.