The Halachot and History of the Three Weeks

Chapter 39: Tishah B’Av Afternoon

1. At Minhah, Tallit and Tefillin are put on with a berachah.

2. In Shemoneh Esrei עננו and נחם are added. נחם is inserted in the berachah of תשכון. If one forgot נחם, it may be said before ואתה ברחמיך, and if not then, then נחם may be inserted at the end of אלקי נצור before יהיו לרצון. The concluding berachah of מנחם ציון בבנין ירושלים  is not said in the event that נחם is forgotten to be recited in its proper place. If one totally forgot to say נחם, Shemoneh Esrei is not repeated.