One who has abstained from meat, should not take meat even if it be sanctified with Mantras from the Yajurveda. One should also avoid the flesh of the vertebral column and the flesh of animals not killed in sacrifices.
यजुषा संस्कृतं मांसं निवृत्ता मांसभक्षणात्। न भक्षयेद् वृथामांसं पृष्ठमांस च वर्जयेत्॥