وَ قَالَ أَمِيرُ الْمُؤْمِنِينَ ع لَا يَشْرَبْ أَحَدُكُمُ الدَّوَاءَ يَوْمَ الْخَمِيسِ فَقِيلَ يَا أَمِيرَ الْمُؤْمِنِينَ وَ لِمَ ذَلِكَ قَالَ لِئَلَّا يَضْعُفَ عَنْ إِتْيَانِ الْجُمُعَةِ.
English translationBab Ul Qaim Publications
Hadith.1261 - The Commander of the Faithful Imam Ali ibn Abi Talib (as) said: "None of you should take medicine on Thursday." He was asked: "O’ Amir al-Mu'minin, why is that?" Imam (as) said: "So that it does not weaken one from attending the Jumu’ah prayer."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.