Kiddush Levanah
51. We say Kiddush Levanah on motzei Tishah B’Av (באר היטב תקנ"ט כ"ה בשם האר"י ). This is because Moshiach ben Dovid is born on motzei Tishah B’Av, so we inform the moon and Klal Yisroel that they are going to be renewed. May we hear this news this year.
52. It is preferable to put on shoes and taste something before saying Kiddush Levanah since one should only greet the Shechinah when he is happy, smells good, and is wearing nice clothing.
10th of Av
53. The Beis Hamikdash caught fire toward evening on the 9th of Av and burned through shekiyah of the 10th. Therefore, certain aspects of aveilus apply on the 10th (שו"ע סי' תקנ"ח ), as will be explained. Although the Beis Hamikdash burned mostly on the 10th, Chazal instituted aveilus primarily on the 9th since that was when the tragedy began (מ"ב סק"א בשם הגמ').
54. The Mechaber writes that it is proper to abstain from meat and wine on the night and day of the 10th (שו"ע שם ). This implies that the issur to eat meat or drink wine applies all day. However, it is clear that the Mechaber holds that the other aspects of aveilus are mutar. This is the Sephardi minhag (שו"ת אור לציון ח"ג פכ"ט תשו' כ"ו ).
55. Issur until chatzos. The Rama mentions that some people only practice aveilus until chatzos of the 10th. The minhag is to not wash, cut hair, or do laundry until chatzos (מהרש"ל, מ"ב סק"ג ) Other issurim of the Nine Days, e.g., mending clothes, wearing fresh clothes, and listening to music, are also followed until chatzos of the 10th (מג"א, מ"ב סק"ב ).
56. Pressing need. Someone who will be traveling to a far place the day after Tishah B’Av and will not get a chance to do laundry on the 10th of Av may do laundry right away on motzei Tishah B’Av if he has a pressing need (הגר''ש וואזנר, קובץ מבית לוי בין המצרים עמ' ל''ח). He can rely on the poskim who hold we are not machmir on anything other than eating meat and drinking wine (מאמר מרדכי, שיורוי כנה''ג הובאו בביאה''ל שם ).
