1-  From www.answering-christianity.com/blog/index.php/topic,1791.msg7104.html#msg7104:

As'salamu Alaikum dear brother,

I do believe in the ISRA and MIRA'AJ.  The Isra from the Al-Masjid Al-Haram in Mecca to Al-Masjid Al-Aqsa in Jerusalem (or al-Quds in Arabic) is mentioned in the following Noble Verse:

[017:001]  Exalted is He who took His Servant by night from al-Masjid al-Haram to al-Masjid al-Aqsa, whose surroundings We have blessed, to show him of Our signs. Indeed, He is the Hearing, the Seeing.

As to the MIRAAJ (ascension to Heaven), it is also mentioned in another Noble Verse.  Please see brother Fadi's correction here:

www.answering-christianity.com/blog/index.php/topic,2421.msg11019.html#msg11019:

"Asèsalamo alaik akhi Osama,

I read your article and was surprised that you deny ascendant of Prophet Mohammad (pbuh) into the sky (heaven). According to Quran, it’s crystal clear that he did.
 
(53:13-15) And he certainly saw him in another descent; Near the Lote-tree beyond which none may pass; Near it is the Paradise of Abode."

Also visit the following links:

1-  www.answering-christianity.com/ac3.htm#links

2-  www.answering-christianity.com/ac20.htm#links

Take care,
Osama Abdallah

2-  From brother Idris: