Al-Kāfi

Hadith 458
fasting
4ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادٍ عَنْ حَرِيزٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ الصَّائِمُ إِذَا خَافَ عَلَى عَيْنَيْهِ مِنَ الرَّمَدِ أَفْطَرَ.
4. Ali ibn Ibrahim has narrated from his father from Hammad from Hariz who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If a fasting person is afraid about the illness of his eyes, he is allowed to eat.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī