Is the testimony accepted if the witnesses state they do not know of any heirs in this town or a specific land?

Primary text

The testimony is not accepted if the witnesses limit their statement of ignorance regarding heirs to a specific locality, such as 'we do not know of an heir in this town' or 'in such and such land.' This position is held by Malik, Al-Shafi'i, Abu Yusuf, and Muhammad. The reasoning is that such limited testimony does not prove the absence of an heir, as they might know of heirs elsewhere, analogous to stating they know of no heir in a specific room.