كَتَبْتُ إِلَى أَبِي عَبْدِ اللَّهِ ( عليه السلام ) أَسْأَلُهُ مَا حَدُّ الْمَرَضِ الَّذِي يُفْطِرُ فِيهِ صَاحِبُهُ وَ الْمَرَضِ الَّذِي يَدَعُ صَاحِبُهُ الصَّلَاةَ قَائِماً قَالَ بَلِ الْإِنْسانُ عَلى نَفْسِهِ بَصِيرَةٌ وَ قَالَ ذَاكَ إِلَيْهِ هُوَ أَعْلَمُ بِنَفْسِهِ .
Translation
Ali Bin Ibrahim, from his father, from Ibn Abu Umeyr, from Umar Bin Azina who said, ‘I wrote to Abu Abdullah<sup>asws</sup> asking him<sup>asws</sup> what the limit of the illness was in which one does not have to Fast therein, and the illness which one can leave the Prayer (whilst) standing’. He<sup>asws</sup> said: ‘But, the human being is an over-looker (best observer) upon himself’. And he<sup>asws</sup> said: ‘That is up to him. He is more knowing of himself’.
Compiled by Shaykh Muhammad ibn Ya'qub al-Kulayni
Source
License: Free for educational and research use (Thaqalayn Data API)
Provided for research and educational purposes. Original source: Thaqalayn Project. Open License.