Here is the translation of the verses:

Indeed the pious will drink from a cup seasoned with Kafur, (5)

a spring where Allah’s servants will drink, making it gush forth as they please. (6)

They fulfill their vows and fear a day whose ill will be widespread. (7)

For the love of Him, they feed the needy, the orphan and the prisoner, (8) [saying,] ‘We feed you only for the sake of Allah. We desire no reward from you, nor thanks. (9)

Indeed we fear a frowning and fateful day from our Lord.’ (10)

So Allah saved them from that day’s ills and graced them with freshness [on this faces] and joy [in their hearts]. (11)

He rewarded them for their patience with a garden and [garments of] silk, (12)

reclining therein on couches, without facing any [scorching] sun, or [biting] cold. (13)

Its shades will be close over them and its clusters [of fruits] will be hanging low. (14)

They will be served around with vessels of silver and goblets of crystal (15)

—crystal of silver— [from] which they will dispense in a precise measure. (16)

They will be served therein with a cup of a drink seasoned with Zanjabeel, (17)

from a spring in it named Salsabeel. (18)