ન ભૂતા ન ભવિષ્યતિ.

na bhūtā na bhaviṣyati.

Literally: Neither has it happened in the past, nor will it happen in the future.
What it means: Said of an unprecedented, unique, or impossible event.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.