13. Muhammad ibn Yahya has narrated from Musa ibn al-Hassan from al-Sayyariy from ‘Ubayd Allah ibn abu ‘Abd Allah who has said the following: “Abu al-Hassan عليه السلام, wrote from Khurasan to al-Madinah, ‘Do not make abu Ja‘far al- Thaniy to drink sawiq with sugar because it is bad for man.’ “Al-Sayyariy has explained it from ‘Ubayd Allah that it is undesirable for men because it weakens manhood desire due to its cold nature with sugar.”