અમાવાસ્યાને રોજ હજાર કામ હોય પણ બહારગામ જવું નહીં.

amāvāsyānē rōja hajāra kāma hōya paṇa bahāragāma javuṁ nahīṁ.

Literally: Even if there are a thousand tasks on the new moon day, do not travel out of town.
What it means: Journeys undertaken on a new moon day are considered inauspicious and bound to end poorly.

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.