In Wizard's Isle

[Actually the abode of the one, Thû, whom later would become Sauron]

In Wizard's Isle still lay forgot,
enmeshed and tortured in that grot
cold, evil, doorless, without light,
and blank-eyed stared at endless night
two comrades. Now alone they were
The others lived no more, but bare
their broken bones would lie and tell
how ten had served their master well.

To Felagund then Beren said:
'Twere little loss if I were dead,
and I am minded all to tell,
and thus, perchance, from this dark hell
thy life to loose. I set thee free
from thine old oath, for more for me
hast thou endured than e'er was earned.'

'Ah! Beren, Beren hast not learned
that promises of Morgoth's folk
are frail as breath. From this dark yoke
of pain shall neither ever go,
whether he learn our names or no,
with Thû's consent. Nay more, I think
yet deeper of torment we should drink,
knew he that son of Barahir
and Felagund were captive here,
and even worse if he should know
the dreadful errand we did go.'

A devil's laugh they ringing heard
within their pit. 'True, true the word
I hear you speak,' a voice then said.
' 'Twere little loss if he were dead,
the outlaw mortal. But the king,
the Elf undying, many a thing
no man could suffer may endure.
Perchance, when what these walls immure
of dreadful anguish thy folk learn,
their king to ransom they will yearn
with gold and gem and high hearts cowed;
or maybe Celegorm the proud
will deem a rival's prison cheap,
and crown and gold himself will keep.
Perchance, the errand I shall know,
ere is done, that ye did go.
The wolf is hungry, the hour is nigh;
no more need Beren wait to die.'

J.R.R. Tolkien

The Geste of Beren and Lúthien

(lines 2,566 to 2,609)