This article aims to explain the phenomenon of “unfounded promises” in the event of Ashura and to derive its lessons for contemporary societies that are confronted with populism and deceptive promises. The present study employs a descriptive–analytical research method. Historical data related to the event of Ashura were first collected and described from reliable historical sources (including al-Tabari, al-Baladhuri, al-Jahiz,
and others). The data were then analyzed using the theoretical framework of populism developed by scholars such as Mudde, Müller, and Moffitt. Adopting a comparative–analytical approach, the study compares the behavior of the Kufans with contemporary populism and proposes a framework for distinguishing genuine promises from false ones. The findings reveal that the people of Kufa, through passionate letters and enthusiastic promises, invited Imam Husayn (peace be upon him) to Kufa. However, when faced with the need for practical action, they broke their covenant and abandoned him. The roots of this behavior can be traced to factors such as fear of the ruling authority, attachment to worldly interests, weakness of faith, and slogan-driven attitudes devoid of steadfast determination. These factors collectively led to empty promises and ultimate betrayal. A similar pattern can also be observed in modern societies, where populists attract public support through emotional slogans and grand promises, yet in practice either fail to deliver or abandon their commitments altogether. In conclusion, the lesson of Ashura for contemporary societies is to avoid placing trust in unsupported promises and to carefully examine the practical record of those who make claims. This article proposes a model, based on the teachings and conduct of Imam Husayn (peace be upon him), for distinguishing sincere promises from false ones, while emphasizing the necessity of accountability, transparency, and practical commitment.