It is never possible to compromise on the right to velayat, caliphate and imamate and the sole heir of the Prophet, who is, in fact, a model for all men and women as regards caliphate, never did so and she sacrificed herself, her property and even his son in defending velayat. Believing that velayat is the foundation of Islam and its negligence is equal to blasphemy and apostasy, she adopted a clear and transparent policy and this is the same point that the Hidden Imam (a.s.) wrote to Abu-Omar Ameri: "the Prophet’s daughter is a nice model for me". To disclose the truth to people, she utilized logical reasoning and stimulation of genuine human emotions. The following are among what Hazrat-e Zahra (a.s.) did to defend velayat, which is, in fact, the continuation of the course of prophethood:
Giving people reminders and warning them, ceasing to give allegiance to the caliph, resisting obligatory allegiance and supplication, reminding people of Ghadir-e Khom, threatening to curse, constant weeping, claiming Fadak, recounting the facts when women came to visit her, refraining from speaking, declaration of resentment against the usurpers of caliphate, the political will.
The most significant part in her struggle is manifested in Fadak sermon as, on the one hand, this land was considered an important economic support for Hazrat-e Ali (a.s.) and, on the other, usurping Fadak which belonged to Hazrat-e Zahra (a.s.) was believed to be illegitimate and against the Quranic principles and this very point is a concrete example which shows that the usurper caliph didn’t deserve to be the successor of the Prophet.