In Book Two, Section 104 of the Masnavi, Rumi explores the concept of a self-evident truth—a claim that serves as its own proof. He illustrates this with the allegory of recognizing a familiar voice in the middle of the night. Just as one does not need visual confirmation or external evidence to identify the voice of a close friend or relative, a heart endowed with spiritual insight instantly recognizes divine truth. The intrinsic familiarity and resonance of the message act as its own witness, bypassing the need for logical argumentation or external validation, provided the listener has the inner perception to comprehend it.