From Dylan's Rollin and tumbin:
"The night's filled with shadows, the years are filled with early doom
The night is filled with shadows, the years are filled with early doom
I've been conjuring up all these long dead souls from their crumblin' tombs "
"The landscape is glowin', gleamin' in the golden light of day
The landscape is glowin', gleamin' in the golden light of day
I ain't holdin' nothin' back now, I ain't standin' in anybody's way "
From Dylan's Someday Baby:
"I'm so hard pressed, my mind tied up in knots
I keep recycling the same old thoughts
Someday baby, you ain't gonna worry po' me any more"
"Well, I don't want to brag, but I'm gonna wring your neck
When all else fails I'll make it a matter of self respect
Someday baby, you ain't gonna worry po' me any more "
Just a sample. I think he can claim authorship to those 2 songs. Neither Muddy nor Robert Johnson nor Willie Dixon nor Lightnin wrote lyrics resembling that.