Hadith 683:8
Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from al-Hakam, who said: I heard Ibn Abi Layla narrating from a man among the companions of the Prophet, may Allah bless him and grant him peace, "that he forbade mixing unripe dates with ripe dates, and dates with raisins."
حدثنا محمد بن جعفر، حدثنا شعبة، عن الحكم، قال: سمعت ابن أبي ليلى يحدث، عن رجل من أصحاب النبي صلى الله عليه وسلم، " أنه نهى عن البلح والتمر والتمر والزبيب "