The words are different from the original (Child) version but this is a very close approximation of the as performed by Sandy Denny.
"I forbid you maidens all that wear gold in hair To travel to Carterhaugh, for young Tam Lin is
that go by Carterhaugh but they leave him a pledge Either mantles of green or else their maidenhead"
Janet tied her kirtle green a bit her knee And she's to Carterhaugh as fast as go can she
She'd not pulled a double rose, a rose but two up then came young Tam Lin, says, "Lady, pull no more"
"And why come you to Carterhaugh command from me? " "I'll come and go", Janet said, "and ask no leave of thee"
Janet tied her kirtle green a bit her knee And gone to her father as fast as go can she
Well, up then spoke her father and he spoke meek and mild "Oh, and alas, Janet," he said, "I think you go child"
"Well, if that be so," Janet said, "myself shall bear the not a knight in all your hall shall get the baby's name
For if my love were an earthly knight, as he is an grey I'd not change my own true for any knight you have"
So tied her kirtle green a bit above her knee And she's gone to Carterhaugh as as go can she
"h, tell to me, Tam Lin," he said, "hy you here to dwell? " "The queen of fairies caught me when from my I fell
And at the end of seven years she pays a tithe to I so fair and of flesh and feared it be myself
But tonight is Halloween and the fairy folk that would let true love win at Mile's Cross they must bide
So first let the horses black and then let pass the brown Quickly run to the steed and pull the rider down
For I'll ride on the white steed, the to the town For I was an earthly knight, they give me renown
Oh, will turn me in your arms to a newt or a snake But me tight and fear not, I am your baby's father
And they turn me in your arms into a lion bold But hold me tight and fear not and you will love child
And they will turn me in your arms into a knight But cloak me in your and keep me out of sight"
In the middle of the she heard the bridle ring She what he did say and young Tam Lin did win
Then up spoke the fairy queen, an queen was she, "Woe betide her face, an ill death may she die"
"Oh, had I known, Tam Lin,'' she said, "what this I did see I'd have looked him in the and turned him to a tree"