Al-Kāfi
Hadith 1354عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ يَاسِرٍ عَنِ الرِّضَا ( عليه السلام ) قَالَ السُّكَّرُ الطَّبَرْزَدُ يَأْكُلُ الْبَلْغَمَ أَكْلًا .
10. A number of our people have narrated from Sahl ibn Ziyad from Yasar who has said the following: “Al-Rida’ (a.s.), has said, ‘The sugar chipped with a small hammer dissolves phlegm entirely.’”