´It was narrated that Anas bin Malik said:` "The Messenger of Allah [SAW] forbade us to soak two things together when one is more potent than the other. I asked him about Fadikh (a drink made from fresh dates cut open) and he forbade it. He disliked the extra bit on Al-Busr, fearing that that might make it two things, so we used to cut it off."
Hadith Referenceسنن نسائي / كتاب الأشربة / 5565
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده حسن
Qatadah says that Anas (may Allah be pleased with him) used to order us to cut off and throw away the overripe dates from one side.
Hadith Referenceسنن نسائي / كتاب الأشربة / 5567
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:ضعيف، إسناده ضعيف، سعيد بن أبى عروبة مدلس و لم يصرح بالسماع،وقتادة أيضًا لم يصرح بالسماع. انوار الصحيفه، صفحه نمبر 365