What is the religious ruling on repeating the Fajr or Subh prayer in congregation after having finished it, in order to help someone who missed the congregational prayer, given that the time is late and the disliked time (for prayer) is about to begin?

It is recommended to give charity to your friend and pray with him so that he may attain the virtue of congregational prayer, as the Prophet, peace and blessings be upon him, said: "Is there no man who would give charity to this one and pray with him?" There is no blame upon you if you do not do so. It is also recommended for one who has prayed to repeat the prayer with a congregation he encounters, so that he may attain its virtue, and it will be counted as a supererogatory prayer for him.