For the sake of enhancing my readers in
their faith, I quote below some more passages from the same page of the book.
After recording the benefits earned by Aboo Lahab in his grave every Monday*

*Aboo
Lahab
was an uncle to the Prophet
(Sallal Laahu Alaiehi wa Sallam). The
event, which Imaam Qastalaani has
referred to, is this. When a maid of Aboo Lahab
(Abdul ‘Uzza)
named Suwaibah
informed him of a son being born to his brother Abdul Laah
(may ALLAAH be pleased with him), he (Aboo Lahab)
was so delighted at hearing this that he pointed his finger to her in a manner
which signified her emancipation [Set her free] for carrying the good news to
him But when the Holy Prophet

 (Sallal
Laahu
Alaiehi
wa
Sallam)
declared
his Prophethood,
he (Aboo
Lahab)
did not accept him as a Prophet but became a most severe enemy to him and
remained so all his life.

 In condemnation of him a whole Soorah
of the Holy Qur’aan
descended. After his death, people of Aboo Lahab’s
household saw him in a dream, and asked him how he had fared. To this, Aboo
Lahab
said that after departing from them he did not meet with any good but was being
given water every Monday from the finger with which he had indicated the
emancipation of Suwaibah,
and this water lessened his torment. This event his also been related in Bukhaari
Shareef,
Fathul
Baari
Sharah
Bukhaari.
Madaarij-un-Nubawwat,
Umadatul
Qaari. 

Excerpt- Islaam’s First Eid -Allamah Kaukab Noorani Okarvi