Is it permissible to fulfill a suitor's request for the Shar'i viewing (nadhra shar'iyya) a long time before the marriage?

The Sharia-compliant looking at the suitor and the fiancée is a Prophetic Sunnah, and scholars have set guidelines for it. Our advice is to expedite this viewing so that the two parties do not become deeply involved for a long time only to discover incompatibility after the viewing.