Praise be to Allaah.
‘Umrah in Ramadan brings a great reward, which is the reward
of Hajj.
It was narrated from Ibn ‘Abbaas (may Allah be pleased with
him) that the Messenger of Allah (blessings and peace of Allah be upon him)
said to a woman of the Ansaar: “What kept you from performing Hajj with us?”
She said: We only have two camels and the father of her son and her son had
gone for Hajj on one camel, and he left us the other camel so that we could
carry water on it. He said: “When Ramadaan comes, go for ‘Umrah, for ‘Umrah
in (that month) is equivalent to Hajj.”
Narrated by al-Bukhaari (1782) and Muslim (1256).
In order for the Muslim to attain that great reward, he has
to enter ihram for ‘umrah and perform the rituals in the month of Ramadan.
He cannot enter ihram for it on the last day of Sha’baan, even if he
performs its rituals in Ramadan, and he cannot enter ihram for it in Ramadan
and perform the rituals in Shawwaal.
There are two ways of performing ‘umrah that do not bring the
reward of Hajj:
1 – Entering ihram for ‘umrah at the end of the month of
Sha’baan and performing the rituals after the month of Ramadan begins.
2 – Entering ihram for ‘umrah before the sun sets on the last
day of Ramadan and performing the rituals on the night before Eid.
Shaykh Muhammad ibn Saalih al-‘Uthaymeen (may Allah have
mercy on him) said:
For the person who does ‘umrah in Ramadan it is essential
that his ‘umrah -- from entering ihram until the end of it -- should be in
Ramadan. Based on that, let us look at another example:
If a man reaches the miqaat in the last hour of Sha’baan and
enters ihram for ‘umrah, then the sun sets and Ramadan begins with the
setting of the sun, then he comes to Makkah and does tawaaf and saa’i and
cuts his hair, can it be said that he did ‘umrah in Ramadan?
The answer is: No, because he started his ‘umrah before the
month of Ramadan began.
A third example: A man entered ihram for ‘umrah before the
sun set on the last day of Ramadan, and he did tawaaf and saa’i for ‘umrah
on the night before Eid. Can it be said that he did ‘umrah in Ramadan?
The answer is: No, because he did not do ‘Umrah in Ramadan,
as part of his ‘umrah was done outside of Ramadan. ‘Umrah in Ramadan is that
which lasts from the start of ihram to the end (in Ramadan). End quote.
Majmoo’ Fataawa al-Shaykh al-‘Uthaymeen,
21/352, 353
And Allah knows best.