Muwatta Malik 1543
موطأ مالك#1543Sahihوَحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عَطَاءِ بْنِ يَسَارٍ، . أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى أَنْ يُنْبَذَ الْبُسْرُ وَالرُّطَبُ جَمِيعًا وَالتَّمْرُ وَالزَّبِيبُ جَمِيعًا .
Yahya related to me from Malik from Zayd ibn Aslam from Ata ibn Yasar that the Messenger of Allah, may Allah bless him and grant him peace, forbade preparing nabidh from nearly ripe dates and fresh dates together, and from dates and raisins together
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Salim al-HilaliSahih Lighairihi
In-book reference: 42:7