Lalat-deshe rudhiram stravancha yasyahave tu pravishechh vaktram!
Tatsompanen kilasyatulyam sangramyagye vidhivancha drashtam..
If blood oozes out from forehead while fighting and enters the mouth this is on a par with the drink of the Soma juice for a fight is a religious rite properly performed. So it has been represented by the saints..
– 3rd chapter, 39th shloka