Reference: Siyar A’laam an-Nubalaa. – Volume 9, Page 181
Yahyaa ibn Sa’eed said:
Do not look at the [text of the] hadeeth, rather look at the isnaad; If it is authentic [then look at the text of the hadeeth], otherwise do not. So do not be lured by [the text of] a hadeeth if it’s isnaad is not authentic.