The true believer does not transgress the limits of fairness in a fit of anger; he does not do anything unjustifiable for the sake of favour to some; neither does he take more than his due share, though he may have the power.
Imam Sadiq (A)
Excerpt from 'The Life of Imam Ja'far Al-Sadiq':
Al-Mansour had appointed many spies around the house of the Imam (as), recording whatever came out from the Imam (as) to be sent to him. The Imam (as) talked about how he was suffering from tightening...
All plans of the Imam (as) to manage to get rid of the malice of the tyrant did not work and al-Mansour decided on assassination... Therefore he concealed a fatal poison in his water through the agent of Yathrib.
When the Imam (as) drank from that water, he had an unbearable pain in his stomach and a feeling that his internal organs were being cut. There he believed that the last moment of life was coming through and that it was getting closer.
He sent for his wife, Hamida and asked her to gather some of their neighbours and followers. When they gathered, he said: 'Our mercy does not reach those who belittle prayer. Prayer is the main principle in Islam. So, that who adheres to it, and does it, is a believer. But those who belittle it, have quitted the boundary of Islam.'He went on reading out some of the verses and chapters of the Holy Quran. Then he had his last glace at his son, Imam al-Kadhim (as) before the departure of his soul which was unique and remains unique forever.
Imam Mousa al-Kadhim (as), with broken heart and lost power, went on preparing the corpse of his father, while tears were flowing down from his eyes. He washed his holy body and enshrouded him with two Egyptian cloths that he used to perform his Hajj with, in addition to a shirt and a turban, which were from his grandfather, Imam Zayn al-Abidin (as).
Then he covered him with a cloth he bought. After preparing his body, Imam Mousa (as) performed the death prayer while hundreds of the believers were there. His holy body was carried with high glorification while the people were severely weeping and at the same time they were talking about the huge scientific capabilities of the Imam (as), which encompassed various scientific fields.
Afterwards, his corpse was brought to al-Baqee and he was buried there besides his grandfather, Imam Zayn al-Abidin (as) and his father, Imam Muhammad al-Baqir (as). His knowledge was buried with his holy body and whatever good attributes that human beings could be attributed with.