wherein they will recline, [and] wherein they may [freely] call for many a fruit and drink,

Therein will they recline (at ease): Therein can they call (at pleasure) for fruit in abundance, and (delicious) drink;

Wherein, reclining, they call for plenteous fruit and cool drink (that is) therein.

Reclining therein, calling therein for many fruits and drink.

Reclining within them, they will call therein for abundant fruit and drink.