Final answer:
The line that contains a metaphor in 'A Hymn to the Evening' is 'And draws the sabre curtains of the night,'.
Step-by-step explanation:
The line from 'A Hymn to the Evening' that contains a metaphor is: 'And draws the sabre curtains of the night,'. This line uses the metaphor of comparing the act of drawing the curtains of the night to the action of drawing a sabre, creating a vivid image of the nighttime sky.
Learn more about Metaphors in poetry