On the twenty-fourth of Dhū al-Ḥijjah, the Holy Prophet (صلى الله عليه وعلى آله وسلم) invited the Christians of Najran that each party would invoke Almighty Allah’s curse upon the liars among them so that the truthful party would be distinguished and the lying party would be cursed. The Holy Prophet (صلى الله عليه وعلى آله وسلم) put on a cloak and embraced Imam Ali, Lady Fatimah al-Zahra’, Imam al-Hasan, and Imam al-Husayn - peace be upon them - and prayed to Almighty Allah, saying, “O Allah, verily, each Prophet had a family members whom were the nearest to him. O Allah, these are my Household; so, (please do) remove uncleanness from them and purify them with thorough purification.” Immediately after that, Archangel Gabriel descended carrying the Verse of Purification.Then, the Holy Prophet (صلى الله عليه وعلى آله وسلم) accompanied his family members as his partners in the process of invoking Almighty Allah’s curse upon the lying party. As soon as the Christians’ eyes fell on the Holy Prophet’s household, they realized that those individuals were the most truthful and that chastisement would be the share of anyone who would oppose them. They therefore did not dare to participate in that invocation of curse and, instead, they agreed to pay a tribute (jizyah) to the Holy Prophet (صلى الله عليه وعلى آله وسلم).

On the twenty-fourth of Dhū al-Ḥijjah too, Imam Ali Ameer al-Momineen (عليه السلام), while he was offering a prayer and, more precisely, while he was in the genuflection of that prayer, gave his ring as alms to a poor who was begging in the mosque. Therefore, Almighty Allah revealed the holy verses (5:55-56).

The recommended acts on this day are as follows:

Take Ghusl

It is recommended to bathe oneself on this day.

Fast

It is recommended to observe fasting.

2 rakaat prayer

It is recommended to offer a two unit prayer that should be similar to the two unit prayer that is offered on the ‘Eid al-Ghadir Day in form, time, and even reward. The only difference is that Ayah al-Kursi should be recited with the two verses following it.

Dua Mubahalah

It is recommended to say Dua al-Mubahalah

Supplication

It is recommended to say the supplication that Shaykh al-Tusi and Sayyid Ibn Tawus reported to be said after offering a two unit prayer and imploring for forgiveness seventy times. This supplication begins with the following:

اَلْحَمْدُ لِلّٰهِ رَبِّ الْعَالَمِيْنَ اَلْحَمْدُ لِلّٰهِ فَاطِرِ السَّمَاوَاتِ وَالْاَرْضِ ....

Misc

In order to imitate the Commander of the Believers, Imam Ali (عليه السلام), each believing man and woman is required to give alms on this day. It is also advisable to visit the holy shrine of Imam Ali (عليه السلام) and it is proper to say al-Ziyarah al-Jami’ah (the Comprehensive Ziyarah)