Sahih Bukhari Volume 9, Book 87, Hadith 6888

حَدَّثَنَا عَمْرُو بْنُ عَلِيٍّ، حَدَّثَنَا يَحْيَى، حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا مُوسَى بْنُ أَبِي عَائِشَةَ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ لَدَدْنَا النَّبِيَّ صلى الله عليه وسلم فِي مَرَضِهِ فَقَالَ ‏"‏ لاَ تَلُدُّونِي ‏"‏‏.‏ فَقُلْنَا كَرَاهِيَةُ الْمَرِيضِ لِلدَّوَاءِ‏.‏ فَلَمَّا أَفَاقَ قَالَ ‏"‏ لاَ يَبْقَى أَحَدٌ مِنْكُمْ إِلاَّ لُدَّ، غَيْرَ الْعَبَّاسِ فَإِنَّهُ لَمْ يَشْهَدْكُمْ ‏"‏‏

Narrated By 'Aisha : We poured medicine into the mouth of the Prophet during his ailment. He said, "Don't pour medicine into my mouth." (We thought he said that) out of the aversion a patient usually has for medicines. When he improved and felt better he said, "There is none of you but will be forced to drink medicine, except Al-'Abbas, for he did not witness your deed."