The takbeer of tashreeq is:

أَللهُ أَكْبَرُ أَللهُ أَكْبَرُ لاَ إِلهَ إلاَّ اللهُ وَاللهُ أَكْبَرُ أَللهُ أَكْبَرُ وَلِلهِ الْحَمْدُ

1.) It is Waajib for every adult Muslim to recite the takbeers of tashreeq once immediately after every fardh salaat from the Fajr on 9th Zul-Hijjah till Asr on the 13th Zul-Hijjah (23 salaat). The takbeer will also be read after the Id salaat.

2.) All besides the womenfolk will recite it audibly, not silently and not very loudly. The womenfolk will recite it silently. It is not a condition that the takbeer be recited in a chorus.

3.) The person who missed some rakats (masbooq) will read his takbeer after completing his missed rak’ats.

4.) If one forgets to recite the takbeer, and engages in dhikr or duaa, the takbeer should be said as soon as one remembers. The minute one speaks, leaves the masjid or place of salaat, the takbeer cannot be recited. One should seek forgiveness for omitting this waajib act.

5.) If salaat which had become qadhaa during these days are performed in these days, takbeer will be read after these salaat as well. Besides this case, takbeer will not be recited for any other qadhaa salaat.

6.) During the 1st ten days of Zul-Hijjah, it is mustahab to recite Allahu-Akbar constantly.