أَخْبَرَنَا إِسْحَاق بْنُ إِبْرَاهِيمَ ، حَدَّثَنَا عِيسَى بْنُ يُونُسَ ، عَنْ هِشَامِ بْنِ حَسَّانَ ، عَنْ ابْنِ سِيرِينَ ، عَنْ أَبِي هُرَيْرَةَ ، قَالَ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ :" إِذَا ذَرَعَ الصَّائِمَ الْقَيْءُ وَهُوَ لَا يُرِيدُهُ، فَلَا قَضَاءَ عَلَيْهِ، وَإِذَا اسْتَقَاءَ، فَعَلَيْهِ الْقَضَاءُ ".
قَالَ عِيسَى : زَعَمَ أَهْلُ الْبَصْرَةِ أَنَّ هِشَامًا أَوْهَمَ فِيهِ، فَمَوْضِعُ الْخِلَافِ هَهُنَا

Ishaq bin Ibrahim told us, Issa bin Yunus told us, on the authority of Hisham bin Hassan, on the authority of Ibn Sirin, on the authority of Abu Hurairah, he said: He said The Messenger of God, may God bless him and grant him peace, said: “If a fasting person vomits without wanting it, then he does not have to make up for it, but if he vomits, he has to make up for it.”
Issa said: The people of Basra claimed that Hisham was delusional about it, so the matter of disagreement is here.