Ruling:
The recitation of the above Takbeer is compulsory upon every male and female immediately after every Fard Salah.
Days of Takbeer:
Commences: After the Fajr Salah of the Day of Arafah (09 Zul Hijjah)
Terminates: After the Asr Salah of the last day of Tashreeq (13 Zul Hijjah)
Method:
For males, it should be recited audibly once immediately after making Salam. Females should recite it softly.
Hint: Ladies may consider sticking a little reminder at the place where they perform Salah to help them remember the recitation of the Takbeer.