karan-Haath thamlo preeta ,,wada krta hun ye haath kbhi nhi chodunga...
preeta looked at him with all the love which was somewhere hidden in her pure heart..
this incident took place when identity of groom was revealed..it was revealed how karan replaced prithvi and tooh his place just to marry the love of his life ...without whom his life,his happiness just incomplete.
sarla can see the love for karan in preetas eyes ...she know somewhere her daughter always feels and sees karan as her life partner...same is in the case of karan also.
Sarla- said to karan that she is ready to accept the marriage ..as she know 'uski beti ki khushiyan sirf karan or karan k parivar mein hi h' but one thing karan has to be promise that he will no make a tear to fell from preeta's  eye ..vo use apni jaan je se bhi jyada pyar karega.
After all this ..everyone accept karan as their son in law ..bidaai rituals happened ..
and everyone blessed the married couple.