Refuting some false claims of the celebrators of Al-Mawlid - First Claim

First claim: "The celebration of Al-Mawlid is a way of expressing joy, which is something beneficial. It would benefit anybody who celebrates it, as it even benefits Abu Lahab (a disbelieving uncle of the Prophet sallAllahu ‘alaihi wa sallam), due to the narration which states that a person saw Abu Lahab in his dream and asked him about his predicament. He (Abu Lahab) replied that his punishment in hell is reduced every Monday due to his rejoicing at the news of the birth of the Prophet sallAllahu ‘alaihi wa sallam and also because he bought the freedom of the slave who brought him the good news."
Refutation: This narration has an unconnected chain of narrators which renders it inauthentic; therefore, it cannot be used as evidence in an argument. Even if we were to assume, for the sake of argument, that it is not a weak narration, it is still rejected for many other reasons:

* It was only a dream and dreams are never used as a basis to judge anything, let alone be used to establish a form of worship based on them.

* This contradicts the Qur'aan. Allah says that which translates as: "And we will approach [i.e., regard] what they [i.e., the disbelievers] have done of deeds and make them as dust dispersed." (Al-Furqaan: 23). Therefore, nobody will get any reward for their deeds unless they intend to get closer to Allah by doing so, and a disbeliever will never attempt to do anything to get closer to Allah as he does not believe in Him in the first place.

* History proves that this story was incorrect, and that Abu Lahab did not free any slave at that time. In fact, the slave in question was freed after the migration of the Prophet sallAllahu ‘alaihi wa sallam as mentioned in the books of Ibn 'Abdul Barr and Ibn Al-Jawzi, may Allah have mercy upon them both.