וְע֨וֹד אֲנִ֤י מְדַבֵּר֙ וּמִתְפַּלֵּ֔ל וּמִתְוַדֶּה֙ חַטָּאתִ֔י וְחַטַּ֖את עַמִּ֣י יִשְׂרָאֵ֑ל וּמַפִּ֣יל תְּחִנָּתִ֗י לִפְנֵי֙ יְהוָ֣ה אֱלֹהַ֔י עַ֖ל הַר־קֹ֥דֶשׁ אֱלֹהָֽי׃
And while I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God;
Read halakhic rulings (Jewish law) on Daniel 9:20: and classical halakhic sources.