The Shaykh’s linking of the explanation of the hadith of 'Ammar regarding the prohibition of fasting on the Day of Doubt to the preceding hadith.

The Shaykh : Therefore, the author Ibn Hajar (may Allah have mercy on him) followed the preceding hadith with a second one, which is his statement: "And from 'Ammar ibn Yasir (may Allah be pleased with him), who said: 'Whoever fasts on the day of doubt has disobeyed Abu al-Qasim.'" Al-Bukhari mentioned it as a comment, and the five [books] connected it, and Ibn Khuzaymah and Ibn Hibban graded it as authentic.