[Anavaralo]

Alhamdulillah for that link Brother Taliban, it was helpful. Just one question though, I understand the fistful under the chin, but what about the jawline?
I have seen men with "box" beards where the hair under the chin is one/two fists long with the hair on the jawline grown longer to meet the hair below the chin.
To what extent are we permitted to cut the hair on the jawline? Should we make a fist under the jawline too and cut whatever is below like we would do with the chin?