The Sufficient (Vol 4) · Hadith 456 (#Ḥadīth #2)

2ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ عُمَرَ بْنِ أُذَيْنَةَ قَالَ كَتَبْتُ إِلَى أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) أَسْأَلُهُ مَا حَدُّ الْمَرَضِ الَّذِي يُفْطِرُ فِيهِ صَاحِبُهُ وَالْمَرَضِ الَّذِي يَدَعُ صَاحِبُهُ الصَّلاةَ قَائِماً قَالَ بَلِ الإِنْسانُ عَلى نَفْسِهِ بَصِيرَةٌ وَقَالَ ذَاكَ إِلَيْهِ هُوَ أَعْلَمُ بِنَفْسِهِ.

2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from ‘Umar ibn ‘Udhaynah who has said the following: “I once wrote to abu ‘Abd Allah , asking about the limit of illness because of which one has permission to stop fasting and not to perform Salat (prayer) in a standing position. He (the Imam) said, ‘In fact, man is well aware of his soul,’ it is up to him to decide; he knows about his soul.’”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).