Hisham ibn Hakim reported: He passed by some people in Syria who had been made to stand in the sun and had oil poured over their heads. He said, “What is this?” It was said, “They are being punished for not paying taxes.” Hisham said: I heard the Messenger of Allah, peace and blessings be upon him, say, “Verily, Allah will torture those who tortured people in this world.”

Source: Sahih Muslim 2613

Grade: Sahih (authentic) according to Imam Muslim

عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ هِشَامِ بْنِ حَكِيمِ بْنِ حِزَامٍ قَالَ مَرَّ بِالشَّامِ عَلَى أُنَاسٍ وَقَدْ أُقِيمُوا فِي الشَّمْسِ وَصُبَّ عَلَى رُءُوسِهِمُ الزَّيْتُ فَقَالَ مَا هَذَا قِيلَ يُعَذَّبُونَ فِي الْخَرَاجِ ‏.‏ فَقَالَ أَمَا إِنِّي سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ إِنَّ اللَّهَ يُعَذِّبُ الَّذِينَ يُعَذِّبُونَ فِي الدُّنْيَا

2613 صحيح مسلم كِتَاب الْبِرِّ وَالصِّلَةِ وَالْآدَابِ بَاب الْوَعِيدُ الشَّدِيدُ لِمَنْ عَذَّبَ النَّاسَ بِغَيْرِ حَقٍّ