A nuʾy is an earthen ridge or channel constructed near a tent to divert rainwater. Jidhm al-ḥawḍ refers to the remaining base or edge of a water trough. Their shared feature is a raised, durable boundary still visible in the ground.
Lam yatathallam indicates that this remnant has not yet been breached or broken. Unlike the hearthstones, which recall cooking, the channel points to the dwelling’s protective arrangement. Together the two kinds of evidence make recognition more secure.