٤ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ أَحْمَدَ عَنْ أَحْمَدَ بْنِ الْحَسَنِ عَنْ عَمْرِو بْنِ سَعِيدٍ عَنْ مُصَدِّقِ بْنِ صَدَقَةً عَنْ عَمَّارِ بْنِ مُوسَى عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ سَأَلْتُهُ عَنِ الرَّجُلِ يَخْرُجُ مِنْ جَوْفِهِ الْقَلْسُ حَتَّى يَبْلُغَ الْحَلْقَ ثُمَّ يَرْجِعُ إِلَى جَوْفِهِ وَهُوَ صَائِمٌ قَالَ لَيْسَ بِشَيْ‏ءٍ.
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Ahmad ibn al-Hassan from ‘Amr ibn Sa‘id from Musaddiq ibn Sadaqah from ‘Ammar ibn Musa who has said the following: “I once asked abu ‘Abd Allah , about the case of a man with whose burping something comes up to his throat and then it goes back when he is fasting. He (the Imam) said, ‘He is not obligated for anything .’” 