Can company terminate employee after resignation acceptance?

when the Co has accepted the resignation the qstn of termination does not arise

If the company does that then it is an unethical practice / company.  If the organization wants to get rid of the resigned employee then they can as well relieve him early but should not terminate because the out going employees are the brand ambassidors and the image of the company goest viral in to the similar industry and people don't choose this company to work.

As the process is going to affect the future of the out going employee hence the employee some how request and get out with a relieving certificate with a positive comments instead of termination lr. 

The decision to terminate an 
employee, once made, sets in motion a number of duties of the employer to handle the 
termination in a professional manner preserving the dignity of the terminated employee and 
protecting the employer’s interests as the employer does not want to see an angry former 
employee down the road in court. 

Yes agree with Ramacharyji but we need not to understand the case presented with us its very short information provided we need additional information is any case or enquiry pending with your friend before he resigned?

Because with out any reason is not the ground to terminate any employee from the system.

Is any unauthorised absentisum or any behavioral problems happen which are covered as per the service rools for termination ?

You have posted that:

“Now Company Is Trying To Terminate Him A Week Before His End Date.”

You have not elaborated how?

If the intentions are malafide and an attempt to falsify the record and entries is being made with vindictive and zealous mindset,  then it is the time to act ASAP and approach:

Labor Authorities

Court of Law

Employee’s Trade Unions

Labor Law Consultant/Service Matters Lawyer/law Firm

And check the moves.

Record all transactions (audio/visual/witnessed/minuted).

Download everything that is relevant and useful.

Your counsel may opine that this may get termed as fit case for Unfair Dismissal/Wrongful Termination/criminal defamation/criminal discriminatory retaliation………….etc ……………….and may advise you on to build irrefutable evidence.