Visiting and praying in
Al-Masjid Al-Aqsa
is Sunnah to do if possible
Q 3: Under the current agreement between the Arabs
and
Jews,
is it permissible to visit
Al-Aqsa Mosque
and offer Salah (Prayer) in it, in the case of the approval of the Arab countries?
A:
Visiting
Al-Aqsa Mosque and offering Salah in it is an act of Sunnah (supererogatory act of worship following the example of the Prophet) to be done if this is possible. The Prophet (peace be upon him) said:
No journey should be undertaken except to three Masjids: Al-Masjid Al-Haram (the Sacred Mosque in Makkah), this Masjid of mine (Al-Masjid Al-Nabawy (the Prophet’s Mosque in Madinah)), and
Al-Aqsa Mosque. 
(Agreed upon by Imams Al-Bukhari and Muslim)
May Allah grant us success!
Source: Fatwas of Ibn Baz
