Which Robert Burns poem is misquoted by Holden in explaining the novel's title?

The Robert Burns poem Holden misquotes while explaining the title is “Comin' Thro' the Rye.” Holden imagines himself catching children who are running through a field of rye near a cliff.

The scene occurs when Holden talks with his younger sister Phoebe. He has heard a child singing a version of the poem and has misunderstood the words “when a body meet a body” as “if a body catch a body.” Phoebe corrects him, revealing that his heroic fantasy is built on a misremembered lyric.

Burns wrote the poem in 1784, and its original subject is not Holden's imagined rescue mission. The poem uses flirtatious and bawdy imagery involving people meeting in or passing through rye. “Auld Lang Syne” is a related Burns-associated song and shares a familiar Scottish musical tradition, but it is not the poem that supplies Salinger's title.