John Gill Commentary Mark 15:38

"And the veil of the temple was rent in two from the top to the bottom." — Mark 15:38 (ASV)

And the vail of the temple was rent in twain, from the top
to the bottom . ] At which time also there was an earthquake, and the rocks were rent, and graves were opened, as Matthew relates, (See Gill on Matthew 27:51), (See Gill on Matthew 27:52).