Moving to another mosque after
      Fajr for a halaqah
Question

                We pray Fajr in a mosque
      that is close to us, then we young men get up and go to another mosque in
      which there is a study-circle (halaqah) for memorizing Qur’aan. This
      mosque is not far away, it takes only five minutes on foot. Does this
      moving (to the second mosque) mean that we will lose the reward for a
      complete Hajj or ‘Umrah with the Messenger of Allaah 
 (peace and
      blessings of Allaah be upon him)? Because in the hadeeth he said:
      “Whoever prays Fajr then sits remembering Allaah until the sun rises
      will have…”). Does this mean its rising or does it mean when it has
      risen to the height of a spear [above the horizon]? I.e.,
      should we pray the two rak’ahs when the sun rises, or do we have to wait
      until it has risen to the height of a spear [above the horizon]?
Praise be to Allah.There is nothing wrong with moving from one mosque to
      another after the prayer in order to attend a class or study circle. This
      is better than sitting in the first mosque until the sun rises, because it
      is for the purpose of seeking knowledge. With regard to the two-rak’ah
      prayer, this should be done after the sun has risen to the height of a
      spear [above the horizon].