Sahih Muslim 142
Sahih Muslim · Book 33: The Book on Government · The virtue of a just ruler and the punishment of a tyrant; Encouragement to treat those under one's authority with kindness and the prohibition against causing them hardship
It has been narrated on the authority of Abu al-Aswad who said:
وَحَدَّثَنَا عُقْبَةُ بْنُ مُكْرَمٍ الْعَمِّيُّ ، حَدَّثَنَا يَعْقُوبُ بْنُ إِسْحَاقَ ، أَخْبَرَنِي سَوَادَةُ بْنُ أَبِي، الأَسْوَدِ حَدَّثَنِي أَبِي أَنَّ مَعْقِلَ بْنَ يَسَارٍ ، مَرِضَ فَأَتَاهُ عُبَيْدُ اللَّهِ بْنُ زِيَادٍ يَعُودُهُ . نَحْوَ حَدِيثِ الْحَسَنِ عَنْ مَعْقِلٍ ، .
My father related to me that Ma'qil b. Yasir fell ill. 'Ubaidullah b. Ziyad called on him to inquire after his health. Here follows the tradition as narrated by Hasan from Ma'qil.