Megillah 26B

למישתא ביה שיכרא ⁠— שפיר דמי.

to drink beer with the proceeds seems well and is permitted. The 7 representatives have the authority to annul the sanctity of the synagogue, and therefore the proceeds of its sale do not retain any sanctity.

רבינא הוה ליה ההוא תילא דבי כנישתא. אתא לקמיה דרב אשי, אמר ליה: מהו למיזרעה? אמר ליה: זיל זבניה משבעה טובי העיר במעמד אנשי העיר, וזרעה.

The Talmud relates: Ravina had a certain piece of land on which stood a mound of the ruins of a synagogue. He came before Rav Ashi and said to him: What is the halakha with regard to sowing the land? He said to him: Go, purchase it from the 7 representatives of the town in an assembly of the residents of the town, and then you may sow it.

רמי בר אבא הוה קא בני בי כנישתא. הוה ההיא כנישתא עתיקא, הוה בעי למיסתריה ולאתויי ליבני וכשורי מינה ועיולי להתם. יתיב וקא מיבעיא ליה הא דרב חסדא, דאמר רב חסדא: לא ליסתור בי כנישתא עד דבני בי כנישתא אחריתי ⁠— התם משום פשיעותא, כי האי גוונא מאי? אתא לקמיה דרב פפא ואסר ליה. לקמיה דרב הונא ואסר ליה.

Rami bar Abba was once building a synagogue. There was a certain old synagogue that he wished to demolish, and bring bricks and beams from it, and bring them to there, to construct a new synagogue. He sat and considered that which Rav Ḥisda said, as Rav Ḥisda said: One should not demolish a synagogue until one has built another synagogue. Rami bar Abba reasoned that Rav Ḥisda’s ruling there is due to a concern of negligence, as perhaps after the first synagogue is demolished, people will be negligent and a new one will never be built. However, in a case like this, where the new synagogue is to be built directly from the materials of the old one, what is the halakha? He came before Rav Pappa to ask his opinion, and he prohibited him from doing so. He then came before Rav Huna, and he also prohibited him from doing so.