“I spent my days under the slavery of Amir’ul-Mu’minin (a.s) in such a way that he used to feed me first then eat himself. First he clothed me then he wore himself. One day the Imam purchased two shirts. He saw that the shirt of Salman Farsi was patched at many places. So he gave one shirt to him and told me to put on the second. I said that the Imam’s shirt was also quite worn out, but he said, “You wear it. I will buy another one for myself when it is possible.” He never awoke me for some errand and never made me work when I was sick. He never gave me tasks beyond my strength or capacity. The Imam tried to free me many times but I implored and pleaded the Imam not to do so.” — Qambar, the slave of Imam Ali (a.s)
O Allah, I have wronged myself, and I have been audacious in my ignorance, and I have depended upon Your ancient remembrance of me and Your favour toward me. How many ugly things have you concealed, how many burdensome tribulations have you abolished, how many stumbles you have prevented, and you many ordeals have you repelled.
An excerpt from Duā Kumyāl (ra). Hands down my favourite part is this section of the Du`a. This is the one that speaks to me the most.
Fatima was born on the twentieth day of Jamadil-akhira, forty-five years after the birth of the Prophet. And the cause of her death was that Qunfuth, the slave of the man (i.e. Abu Bakr), by the command of his master (Abu Bakr), hit her with his sword, from which she miscarried Muhassan, and she became severely ill from this event. And she did not allow anyone of those whom harmed her to enter her house. There were two of the companions of the Prophet (i.e. Umar and Abu Bakr) who asked Amir Al-mumineen (Imam Ali) to intercede on their behalf (and ask Fatima to allow them to enter). He (Imam Ali) asked her and she permitted (for them to enter). When they entered, they remarked “How are you O daughter of the Messenger of Allah?” She replied “I am well, praise to Allah”. Then she told them both, “Have you not heard the Prophet say “Fatima is a part of me, whosoever hurts her has in fact hurt me, and whoever hurts me has in fact hurt Allah”?” They both affirmed that. She said “I swear by Allah that you have both hurt me.” So they both left the house and she was displeased with them
Doubt is named doubt because it resembles truth. As for lovers of Allah, their conviction serves them as light and the direction of the right path (itself) serves as their guide; while the enemies of Allah, in time of doubt call to misguidance in the darkness of doubt and their guide is blindness (of intelligence). One who fears death cannot escape it nor can one who fears for eternal life secure it.
The Commander of the Faithful `Ālī (peace be upon him), Nāhj Al-Balaghā, Sermon 38