https://thornhillkollel.com/wp-content/uploads/2016/02/shabbos-perek-tes-zayin-mishna-5-what-can-be-done-on-Shabbos-to-prevent-a-fire-from-spreading.mp3“shabbos perek tes zayin mishna 5 what can be done on Shabbos to prevent a fire from spreading”.