Drawing blanks. The Japanese doesn't seem to make sense.
末ヲ絶ラ本ヲ固リスル伝（傳）
The quote from Sun Tzu is easy enough to find (line 19 below in Chinese/English translation), but there is nothing following the Sun Tzu quote that looks remotely like the Japanese phrase originally posted.
I think the sentence is something like that :
"This tradition is/is named : "cut off the tips for consolidate the origin" ."
According to you, what is the better way to read/write the most exactly this sentence in romaji ?
Your interpretation is correct in meaning, but speaking strictly, it's not a sentence but a noun phrase like "tradition - cutting off ~". Sorry for nitpicking.