Al-Kāfi - The Book of Fasting

Chapter: Rinsing One’s Mouth and Nostrils while Fasting 3ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُ٠َّنْ ذَكَرَهُ عَنْ أَبِي عَبْدِ الله صَلَوَاتُ الله عَلَيْهِ فِي الصَّائِ٠َضُ وَيَسْتَنْشِقُ قَالَ نَعَ٠ْ وَلَكِنْ لا يُبَالِغْ. 3.

Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad from those whom he has mentioned who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who rinses his mouth and nostril when he is fasting. He (the Imam) said, ‘Yes, he can do so but he must not swallow it.’” حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/284))