Halocho #382 - What is a Zecher L'Churban?

After the destruction of the Bet Hamikdash (Temple) certain types of joy were forbidden and certain acts of mourning were instituted "Zecher L'Churban" - as a reminder of the destruction. One may not plaster ones entire house; a square Ama (~50 cm x 50 cm) of wall opposite [or above] the front door should be left bare to recall the destruction. The reason many people don't do so nowadays is unclear. A woman should never wear all her jewelry at the same time. Some ashes are put on a groom's head before the Chuppa (wedding ceremony) on the spot he usually wears his Tefilin. A bride's veil should not have gold nor silver threads. A plate is broken at the engagement, and a cup under the Chuppa. All these [and more] are done Zecher L'Churban - as a reminder of the destruction. Source: Kitzur Shulchan Aruch 126:1,2 - Danny Sunday, 12 Av 5769

Please daven for a complete recovery for Bracha Elisheva bas Kayla - a young mother in urgent need of a Refu'a Sheleimah