Jeremías 9:23 Halajá: Abudarham

And the prayer-leader goes to bring out the Torah scroll, without saying "Deity long-suffering!," and brings out the scroll and rests it on a small tower near the ark, and does not say "All sanctify" but starts with "Revealed and shown be His sovereignty" etc. And the reason for changing the location of the Torah scroll is as we said for public fast days: "And they put burnt ashes upon the ark"¹M. Taanit 2:1, as it is written "I will be with them in stress"²Psalm 91:15. And the priest, levite, and concluder recite from Parashat Vaetḥanan, Deuteronomy 4:25–40. And say the half-qaddish, and conclude with Jeremiah 8:13-9:23, And bless the concluding blessings up until "shield of David" — in the afternoon as well. And it says in Tractate Soferim that some place the case of the scroll on the ground and say "Fallen is the crown of our heads!"³ Lamentations 5:16 and recite eulogies like one whose dead are before him, and some change their place, and some descend down from their benches, and everyone wallows in ashes, and none greets another all night and all day until the people have finished their qinot.⁴Tractate Soferim 18:7