Al-Kāfi - The Book of Fasting

Chapter: The Case of a Fasting Person’s Vomiting, Nauseating or Burping َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َانَ بْنِ عِيسَى عَنْ سَ٠َاعَةَ قَالَ سَأَلْتُهُ عَنِ الْقَلْسِ وَهِيَ الْجُشْأَةُ يَرْتَفِعُ الطَّعَا٠ِنْ جَوْفِ الرَّجُلِ ٠ِنْ غَيْرِ أَنْ يَكُونَ تَقَيَّأَ وَهُوَ قَائِ٠ٌ فِي الصَّلاةِ قَالَ لا يَنْقُضُ ذَلِكَ وُضُوءَهُ وَلا يَقْطَعُ صَلاتَهُ وَلا يُفَطِّرُ صِيَا٠6.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ‘Uthman ibn ‘Isa from Sama‘ah, who has said the following: “I once asked abu ‘Abd Allah (a.s.), about burping which is belching and brings food up from the inside of a man without vomiting and when he is standing in Salat (prayer).

He (the Imam) said, ‘It does not invalidate his wudu’, destroy his Salat (prayer) or invalidate his fast.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/287))