[Xiciljed]

Kanz is a collection of ahadith without their chains, with references to books of hadith which mention chains for them.
A few ahadith are such that the author doesn't quote them from books mentioning their chains, instead he just mentions that they were found in so and so book.

This hadith is such an example.
Allamah Suyuti mentions that he found it in a collection of ahadith of al-Mustaghfiri, who heard this hadith from someone, but doesn't mention the chain.

As for the incorrect attribution to the Musnad of Imam Ahmed, it was due to the old copy of the Musnad having selections of Kanz printed in its margin.
So it seems that someone found the hadith in the margin and thought it is in the musnad, due to the copy of the book mentioning the musnad, when in reality it is from Kanz.

And as for the claim that we neeed to show which book of fabricated hadith mentioned this narration, it is the completely incorrect approach, based on ignorance of the field of hadith.

In order for someone to atttribute a saying to Nabi they are required to produce the chain for it. Until then, their attribution is worthless.
Those opposing them aren't required to prove it to be fabricated, rather those quoting it have to prove its authenticity.

To understand, if someone claimed that Nabi mentioned forums to be haram!
If we ask him for the proof, he could claim that it is mentioned in hadith, even though he doesn't have a chain for it and that if you oppose him, please show which book of fabricated ahadith classified it as a fabrication!

What would be a suitable reply to such an ignoramous?