In the case of Eid al-Adha, the takbeer begins on the first da | Ask A Muslim

In the case of Eid al-Adha, the takbeer begins on the first day of Dhu’l-Hijjah and lasts until sunset on the last of the days of tashreeq. 

Description of the takbeer: 

It was narrated in the Musannaf of Ibn Abi Shaybah with a saheeh isnaad from Ibn Mas’ood (may Allaah be pleased with him) that he used to recite takbeer during the days of tashreeq: 

Allaahu akbar, Allaahu akbar, laa ilaaha ill-Allaah, wa Allaahu akbar, Allaah akbar, wa Lillaah il-hamd (Allaah is Most Great, Allaah is most Great, there is no god but Allaah, Allaah is Most great, Allaah is most great, and to Allaah be praise). 

It was also narrated elsewhere by Ibn Abi Shaybah with the same isnaad, but with the phrase “Allaahu akbar” repeated three times. 

Al-Mahaamili narrated with a saheeh isnaad also from Ibn Mas’ood: “Allaahu akbaru kabeera, Allaahu akbaru kabeera, Allaahu akbar wa ajallu, Allaahu akbar wa Lillaah il-hamd (Allaah is Most Great indeed, Allaah is Most Great indeed, Allaah is most Great and Glorified, Allaah is Most Great and to Allaah be praise).” See al-Irwa’, 3/126. 

4 – Offering congratulations 

The etiquette of Eid also includes the congratulations and good wishes exchanged by people, no matter what the wording, such as saying to one another Taqabbala Allaah minna wa minkum (May Allaah accept (good deeds) from us and from you” or “Eid mubaarak” and other permissible expressions of congratulations. 

It was narrated that Jubayr ibn Nufayr said: When the companions of the Prophet (peace and blessings of Allaah be upon him) met one another on the day of Eid, they would say to one another, “May Allaah accept (good deeds) from us and from you.” Ibn Hajar said, its isnaad is hasan. Al-Fath, 2/446. 

Offering congratulations was something that was well known among the Sahaabah, and scholars such as Imam Ahmad and others allowed it. There is evidence which suggests that it is prescribed to offer congratulations and good wishes on special occasions, and that the Sahaabah congratulated one another when good things happened, such as when Allaah accepted the repentance of a man, they went and congratulated him for that, and so on. 

Undoubtedly these congratulations are among the noble characteristics among the Muslims. 

The least that may be said concerning the subject of congratulations is that you should return the greetings of those who congratulate you on Eid, and keep quiet if others keep quiet, as Imam Ahmad (may Allaah have mercy on him) said: If anyone congratulates you, then respond, otherwise do not initiate it. 

5 – Adorning oneself on the occasion of Eid. 

It was narrated that ‘Abd-Allaah ibn ‘Umar (may Allaah be pleased with him) said that ‘Umar took a brocade cloak that was for sale in the market and brought it to the Messenger of Allaah (peace and blessings of Allaah be upon him), and said, “O Messenger of Allaah, buy this and adorn yourself with it for Eid and for receiving the delegations.” The Messenger of Allaah (peace and blessings of Allaah be upon him) said to him, “Rather this is the dress of one who has no share (of piety or of reward in the Hereafter)…” Narrated by al-Bukhaari, 948. 

The Prophet (peace and blessings of Allaah be upon him) agreed with ‘Umar on the idea of adorning oneself for Eid, but he denounced him for choosing this cloak because it was made of silk. 

It was narrated that Jaabir (may Allaah be pleased with him) said: The Prophet (peace and blessings of Allaah be upon him) had a cloak which he would wear on the two Eids and on Fridays. Saheeh Ibn Khuzaymah, 1756, 

Al-Bayhaqi narrated with a saheeh isnaad that Ibn ‘Umar used to wear his best clothes on Eid. 

So a man should wear the best clothes that he has when going out for Eid. 

With regard to women, they should avoid adorning themselves when they go out for Eid, because they are forbidden to show off their adornments to non-mahram men. It is also haraam for a woman who wants to go out to put on perfume or to expose men to temptation, because they are only going out for the purpose of worship.