When should you pot?

We got this anthurium crystallinum today, though it's in a plastic cup with pebbles and not in soil. Basic question but should we pot it straight away or water it in the cup for a while as it adjusts to the new location?

We got this anthurium crystallinum today, though it's in a plastic cup with pebbles and not in soil. Basic question but should we pot it straight away or water it in the cup for a while as it adjusts to the new location?