Are weak Hadith totally wrong?

Nowadays, many opinions about Dha‘eef Hadith are circulating.  Needless to say, very few of them are correct.  Herein we present some facts about Dha’eef Hadith in the opinions of the Hadith-experts

By virtue of its relationship with the Holy Prophet (Sallallahu alaihi wa sallam), every Hadith is worthy of deductions being drawn from it, in which there cannot be any doubt of weakness.  However, the people who are in the chain of authority from the Successors (Taba‘een) to the Hadith-experts narrating the Hadith have weak memory or suffer from any of the drawbacks, which have been described by the Hadith-experts, then the chain of authority of that Hadith will be termed as weak (Dha‘eef).

For this reason, the Hadith-experts have written that when the weakness of a narration has to be described, it will not be termed as weak with respect to its substance matter and neither will it be described simply as “weak,” but it will be said that this Hadith is weak with this chain of narration or that this Hadith is weak with respect to its chain of narration.  This is what Imam Suyuti (May Allah shower His mercy on him) has written in Tadreeb Ur Rawi Fi Sharhi Taqreeb An Nawawi.

Now the question that whether a weakly authenticated Hadith can be acted upon or not.  It should be remembered that every weakly authenticated Hadith is not to be ignored at all times.  In many cases, it is acceptable and in spite of having a weak chain of authority, such Hadith are acted upon.