集古今佛道論衡 2.9

2.9

六或畏鬼帶符者。符云。左佩太極章。右佩昆吾鐵。指日則停暉。擬鬼千里血。若受黃赤章。即是靈仙訣。

Sixth, regarding fearing ghosts and wearing talismans: Their talismans say: 'Wear the Great Ultimate emblem on the left, wear the Kunwu iron on the right. Point at the sun and its radiance halts; brandish it at ghosts and blood flows for a thousand miles. If one receives the yellow and red emblem, it is the secret formula of the numinous immortals.'