The mention and vocalisation of the takbīrāt begin from the time the sun sets on the night preceding the first day of Dhul-Hijjah due to the saying of Allah (E):
“That they may witness benefits for themselves and mention the name of Allah on known days.” (Al-Hajj: 28)
And these are the ten days of Dhul-Hijjah.
And as for the saying of Allah (D):
“And remember Allah during [specific] numbered days.” (Al-Baqarah: 203)
This verse refers to the days of Tashrīq (11th, 12th and 13th of Dhul-Hijjah); and due to the saying of the Prophet (H):
“The days of Tashrīq are days of eating and drinking and the dhikr of Allāh (D).” Reported by Muslim in his Saheeh.
Bukhārī (V) stated in his Saheeh without a connected chain of narration (declared saheeh by Al-Albānī in Irwā al-Ghalīl no. 651) from Ibn ‘Umar and Abu Abu Hurayrah (L):
The takbīr is of two types:
1. A general takbīr: meaning that which is not restricted to a particular time; and this refers to all of the first ten days of Dhul-Hijjah right through to the last of the days of tashrīq.
2. A specific takbīr: meaning the takbīr that is recited after the daily prayers, beginning from Fajr prayer on the day of ‘Arafah (9th Dhul-Hijjah) until ‘Asr prayer in the last day of the days of tashrīq (i.e. the 13th Dhul-Hijjah).
Men and women:
It is legislated for the men to raise their voices; as for the woman then she raises her voice to the extent that she can hear herself and those surrounding her – such that it is a low voice contrary to the men.
The manner of the Dhikr:
Allahu akbar; Allahu akbar; lā ilāha illallāh
الله أكبر الله أكبر ولله الحمد
Allahu akbar; Allahu akbar; walillāhil-hamd
Or one may increase the takbīr (الله أكبر) in the first line to three takbīrs.
Note on reciting in chorus (in unison):
Shaikh ‘Abdul-‘Azīz Ibn Bāz (V) stated: “As for the recital of the takbīr in unison then it is not religiously legislated; it is an innovation (بدعة); wherein they recited in a united voice – that is an innovation, not legislated [in the religion].”
Written by: [Shaikh] Khālid Ibn Dahwī adh-Dhafīrī.