The narrator Ahmad (b. Yunus) said: I learnt the chain of narrators from Ibn Abi Dhi'b, and a man by his side made me understand the tradition. I think he was his cousin.
In-book : Book 14, Hadith 50
English translation : Book 13, Hadith 2355
14. Fasting (Kitab Al-Siyam)
باب الْغِيبَةِ لِلصَّائِمِ