If the Edge of a Tallith Tears

With H-shem's help, we are learning Hilchot Tzitzit with the Ben Ish Chai, Hacham Yosef Hayyim of Baghdad. The sefer is translated by Shmuel Hiley and published by Yeshivath Ahavath Shalom Publications in Jerusalem 5765/2005. He calls the names of the Chapters by the names of Parashiot, so instead of Chapter One, the first chapter is called Parashath Bereshith, Laws of Ziziyoth. Please note these are for learning purposes only.  For the halacha lemaaseh, i.e. for what to do yourself please ask your own Rav.  

Parashath Noah, Laws of Ziziyoth, Page 15: 

8 (beginning). If the edge of a tallith tears, it should be repaired immediately, so that the tallith does not remain with six corners {the two additional corners being formed by the two edges of the tear}.

(This is in order to take into consideration the opinion {mentioned above, 6} that a tallith with more than four corners does not require ziziyoth.)

This learning should be in memory of Maran, HaRav HaGaon Ovadia Yosef, ztz'l.