Final answer:
The personification in the line "Sleep that knits up the ravell'd sleeve of care" implies that sleep is a kind helper.
Step-by-step explanation:
The personification in the line "Sleep that knits up the ravell'd sleeve of care" implies that sleep is a kind helper. Personification is when human qualities or characteristics are attributed to non-human things. In this case, sleep is given the ability to "knit up" or mend the tangled and troubled sleeve of care, suggesting that sleep is a soothing and comforting presence that helps to alleviate worries and troubles.
Learn more about personification and the meaning behind it