Abū Bakr b. Isḥāq > Abū al-Muthanná > Musaddad > Abū al-Walīd al-Faqīh > al-Ḥasan b. Sufyān And Jaʿfar b. Aḥmad b. Naṣr > ʿAlī b. Ḥujr > ʿĪsá b. Yūnus > Hishām b. Ḥassān > Ibn Sīrīn > Abū Hurayrah

The Messenger of Allah ﷺ said, "Whoever is overwhelmed by vomiting, it is not obligatory for him to make up for missed prayers. And whoever intentionally vomits, he must make up for the missed prayers." This is an authentic hadith according to the condition of the two sheikhs (referring to Abu Bakr and Umar) and they did not exclude it.

أَخْبَرَنَا أَبُو بَكْرِ بْنُ إِسْحَاقَ أَنْبَأَ أَبُو الْمُثَنَّى ثنا مُسَدَّدٌ وَحَدَّثَنَا أَبُو الْوَلِيدِ الْفَقِيهُ ثنا الْحَسَنُ بْنُ سُفْيَانَ وَجَعْفَرُ بْنُ أَحْمَدَ بْنِ نَصْرٍ قَالَا ثنا عَلِيُّ بْنُ حُجْرٍ قَالَ ثنا عِيسَى بْنُ يُونُسَ عَنْ هِشَامِ بْنِ حَسَّانَ عَنِ ابْنِ سِيرِينَ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ ذَرَعَهُ الْقَيْءُ فَلَيْسَ عَلَيْهِ قَضَاءٌ وَمَنِ اسْتَقَاءَ فَلْيَقْضِ» صَحِيحٌ عَلَى شَرْطِ الشَّيْخَيْنِ وَلَمْ يُخَرِّجَاهُ