Is Hajj accepted from children?

The saheeh Sunnah indicates
that a child may do Hajj and be rewarded for it, but that does not count as
the “Hajj of Islam” (obligatory Hajj). Muslim (2378) narrated that Ibn
‘Abbaas (may Allaah be pleased with him) said: A woman lifted up a child of
hers and said: O Messenger of Allaah, is there Hajj for this one? He said:
“Yes, and you will have the reward.” 

Al-Nawawi said in Sharh
Muslim: 

This is used as evidence by
al-Shaafa’i, Maalik, Ahmad and the majority of scholars that the Hajj of a
child counts and is valid, and he will be rewarded for it, but it does not
count as the Hajj of Islam (the obligatory Hajj), rather it is regarded as a
voluntary Hajj. This hadeeth clearly states that. 

Al-Qaadi said: They are
unanimously agreed that it does not count as the obligatory Hajj, which he
must do after he reaches puberty, except for a small group who held an odd
view and said that it does count. But the scholars did not pay any attention
to this view.  

The words of the Prophet
(peace and blessings of Allaah be upon him) “and you will have the
reward” mean that this is because of her carrying him and making him avoid
the things that are forbidden to the pilgrim in ihraam, and do what the
pilgrim does. End quote. 

Al-Khattaabi said: 

It is Hajj for him in the
sense of reward, without being counted as Hajj in the sense of obligatory
Hajj if he lives until he reaches puberty and becomes a man. This is like
prayer; he should be told to pray when he becomes able to pray, although it
is not obligatory for him, and the reward will be written for him by the
bounty of Allaah, and also for the one who tells him to pray and teaches him
to do so. If he does Hajj then he must do the all the rituals, such as
standing in ‘Arafah and circumambulating around the Ka’bah, being carried if
he is unable to walk, and doing saa’i between al-Safa and al-Marwah, and
other actions of Hajj. End quote from ‘Awn al-Ma’bood. 

Al-Tirmidhi (926) narrated
that al-Saa’ib ibn Yazeed said: My father took me for Hajj with the
Messenger of Allaah (peace and blessings of Allaah be upon him) during
the Farewell Pilgrimage when I was seven years old. Classed as saheeh by
al-Albaani in Saheeh al-Tirmidhi. 

And it was narrated from
Ibn ‘Abbaas (may Allaah be pleased with him) that the Prophet (peace
and blessings of Allaah be upon him) said: “Any child who does Hajj then
reaches puberty, he must do Hajj again.” Narrated by al-Shaafa’i in his
Musnad; classed as saheeh by al-Albaani in Irwa’ al-Ghaleel
(686). 

We have previously
discussed the Hajj of a child and its consequences in the answer to question
no. 3240 and
49028. 

And Allaah knows best.