gistfile1.txt

$ pwd
/tmp/x

$ ls -l
total 24
-rw-r--r--  1 allenluce  wheel  13 Dec  8 22:51 a file
-rw-r--r--  1 allenluce  wheel   4 Dec  8 22:47 another file
-rw-r--r--  1 allenluce  wheel  26 Dec  8 22:47 files

$ cat a\ file
one
someterm

$ cat another\ file
two

$ grep someterm $(cat files)
grep: a: No such file or directory
grep: file: No such file or directory
grep: another: No such file or directory
grep: file: No such file or directory

$ ps $$
  PID   TT  STAT      TIME COMMAND
40433 s011  Ss     0:01.06 -zsh

$ zsh --version
zsh 5.8 (x86_64-apple-darwin21.1.0)