A very informative article about the institution of marriage in Islam by Ata Ullah Kaleem sahib originally published in The Review of Religions in November 1992.
In the beginning I am presenting below the English translation of the Arabic sermon which is delivered on the occasion of the solemnization of a Muslim marriage:
All praise is due to God! We laud Him, we beseech help from Him and ask His forgiveness. We confide in Him; we trust in Him alone; and we seek protection with Allah against the evils and mischief of ourselves and from the vices of our deeds.Whomsoever God guideth to the right path none can misguide him; and whomsoever He declares misled none can guide him unto the right path; and we bear witness that none is worthy of worship but God. He is alone and has no partner and we bear witness that Muhammad is His Servant and Apostle.
Read the rest of the article at: http://www.alislam.org/library/links/00000137.html