Question

In Shulchan Arukh, Yoreh De’ah 362, it is explained that it is permitted to bury in a coffin, provided that it is placed in the ground, and some make holes in the coffin.
My question is: why did the Shulchan Arukh and the commentators on the page not mention the words of the Zohar, which forbids burial in a coffin for someone who did not guard his covenant perfectly?
After all, it is the way of the Shulchan Arukh to take the Zohar into account.