Sunan an Nasai
5549
Sahih+2

It was narrated that Ibn 'Abbas said:"The Messenger of Allah [SAW] forbade Ad-Dubba', Al-Muzaffat," - and on one occasion he added: "An-Naqir," - "and (he forbade) mixing At-Tamr (dried dates) with raisins, and Az-Zahuw with At-Tamr

SahihAbu Ghuddah
SahihAl-Albani