Ali ibn al-Madini reported: It was said to Sufyan ibn ‘Uyaynah, may Allah have mercy on him, “What is the definition of temperance?” Sufayn said, “It is that you are grateful in prosperity and patient in adversity. If one is like that, he is temperate.” It was said, “What is gratitude?” Sufyan said, “It is that you avoid what Allah has prohibited.”
Source: Shu’ab al-Imān 4214
عن عَلِيّ بْن الْمَدِينِيّ قَالَ قِيلَ لِسُفْيَانَ بْنِ عُيَيْنَةَ رحمه الله مَا حَدُّ الزُّهْدِ قَالَ أَنْ تَكُونَ شَاكِرًا فِي الرَّخَاءِ صَابِرًا فِي الْبَلَاءِ فَإِذَا كَانَ كَذَلِكَ فَهُوَ زَاهِدٌ قِيلَ مَا الشُّكْرُ قَالَ أَنْ تَجْتَنِبَ مَا نَهَى الله عَنْهُ
4214 شعب الإيمان