It has been narrated that Hisham bin Hakim bin Hizam (May Allah be pleased with them) happened to pass by some (non-Arab) farmers of Syria who had been made to stand in the sun, and olive oil was poured on their heads. He said:
"What is the matter?" He was told that they had been detained for the non-payment of Jizyah. (Another narration says that they were being tortured for not having paid Al-Kharaj). Thereupon Hisham said: "I bear testimony to the fact that I heard the Messenger of Allah (ﷺ) saying, 'Allah will torment those who torment people in the world."' Then he proceeded towards their Amir and reported this Hadith to him. The Amir then issued orders for their release.
[Muslim].
وعن هشام بن حكيم بن حزام رضي الله عنه أنه مر بالشام على أناس من الأنباط، وقد أقيموا في الشمس، وصُب على رءوسهم الزيت فقال: ما هذا؟ يُعذبون في الخراج وفي رواية: حُبسوا في الجزية. فقال هشام: أشهد لسمعت رسول الله صلى الله عليه وسلم يقول: "إن الله يعذب الذين يعذبون الناس في الدنيا" فدخل على الأمير، فحدثه، فأمر بهم فخلوا" ((رواه مسلم. "الأنباط" الفلاحون من العجم)).
Sunnah.com reference : Book 18, Hadith 96
Arabic/English book reference : Book 18, Hadith 1606
http://sunnah.com/riyadussaliheen/18/96
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Avoid suspicion, for suspicion is the gravest lie in talk and
do not be inquisitive about one another and do not spy upon one another and do not feel envy with the other, and nurse no malice, and nurse no aversion and hostility against one another. And be fellow-brothers and servants of Allah.
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