Breaking the Glass Under the Chuppoh

20. Under the chuppoh. There is a minhag for the chosson to break a whole glass cup under the chuppoh (רמ"א או"ח סי' תק"ס ס"ב ואהע"ז סי' ס"ה ס"ג ). This does not transgress bal tashchis since it is done to indicate to those present that they should reflect on the aveilus for Yerushalayim (פמ"ג משב"ז או"ח סי' תק" ס סק"ד, מ"ב שם סק"ט ).