અલ્લાહ માલુમ બેલ કીદર ચલતા હે

allāha māluma bēla kīdara calatā hē

Literally: God knows which way the ox is walking.
What it means: Expresses complete uncertainty about how an unpredictable situation will turn out.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · 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.