Thirumanancheri

Two girls promised each other that their son and daughter would marry in future; one got a beautiful girl while the other gave birth to a turtle-shaped boy; former refused the marriage; the latter appealed to the Lord; he converted the turtle to a handsome young man; marriage went off well; so goes the story; hence the belief is that the physical disabilities of the spouse will be either corrected by the Lord or overlooked by the other spouse; hence the marriage obstacles would be removed once you come and pray here.

https://www.google.com/search?q=Thirumanancheri