In Sermon (128), Imam Ali (a.s.) addresses Abu Dharr (r.a.) during his exile, emphasizing the significance of standing firm in one's beliefs. This sermon is set against the backdrop of Abu Dharr's exile due to his unwavering commitment to truth and justice, which posed a threat to the ruling elite of his time.

The main theme of this sermon revolves around the idea of righteous anger for the sake of Allah and placing one's hope in Him. Imam Ali (a.s.) reminds Abu Dharr that the people who exiled him are fearful of him in terms of their worldly power, while he fears for his faith. This highlights the dichotomy between worldly concerns and spiritual integrity.

A key takeaway from this sermon is the encouragement to abandon worldly possessions that lead to moral compromise. Imam Ali (a.s.) advises Abu Dharr to leave behind what the oppressors fear losing and to focus on safeguarding his faith. This serves as a reminder that true freedom comes from detachment from materialism and reliance on Allah.

Another important lesson is the assurance that if one fears Allah, He will open pathways even in the most constraining circumstances. This reinforces the concept that divine support is always available for those who uphold truth and righteousness. The sermon concludes with a poignant reminder that compromising one’s principles for acceptance in the worldly realm is not worth the price of one's integrity.