Force early relieving without any benefit - they have a right to do?

I need some clarification on the topic. I am working with XXX Global Services Ltd. I have resigned (Keeping in my notice period is 90 days) but now my manager is calling me and pushing to me to accept early relieving.My manger forcefully want me not to server the notice period and leave with immediate effect. reason given by him, "Business has no requirement of you in the role". I have informed my manager that I do not have any job in hand; due to which I can't go for immediate relieving. I can only accept this if they pay me for 3 months; in case business want me to quit my job. He denied and just insisting saying; it's a management decision and you will need to leave. All this discussion started since I resigned, prior to that there was no such announcement or anything that the company is Ramping down and asking engineers in my team to resign.
I never had very good relation with my manager and he never got any chance to verdict me for any issue. Maybe he is now trying to kick me out and get rid of me as I always had questions against his decisions and process. Same thing he did today with one of my team member who is serving notice perios since last 40 days now.
Please suggest if this is something which is acceptable or they have rights to do?
P.S - Both resignation : me and my colleague, was done under manager/manegement issue.

If your notice period is 90 days as per offer letter, then company cannot officially force you to leave earlier.
If company is so eager, let them pay you 2 months pay and release you earlier.
Whether manager likes you or dislikes you is another matter but here you should focus only on rejecting pressure to leave on unfavourable terms when there is no ready job for you.

Now my manager has accepted the resignation and set the date to 15 Jan 2018. I didn't accept the same on Online Tool. I have call recordings and other evidence who proves that manager is provoking me and forcefully want to leave organisation ASAP. What should be my next course of action as he is trying to harass me mentally. I have also sent an email to HR team explaining the issue, probably they will get back on Monday as we are in week end now. :(

Dont get provoked and remain strong.
Mental harassment has no meaning if you are not getting outwardly upset or reacting angrily.Manager will find no reaction and will stop it.
Stick to your requirement which is legally correct.By provoking you into angry reaction, manager or whomsoever is trying to get another handle to change direction of the whole case.

Dear Collegues,
It gives me pain while found posting from ghosht(Annoymous). I do not understand why people have fear and wants to live in disguise & not disclosing the identity. Why to spare my valueable time for lost identity for no reason.

Dear Friend,
Write him a mail with cc to his boss, HR & CEO.
Dear Sir,
This has reference to my resignation dated----- I gave 3 months notice to quit as per terms & conditions of my appointment order/letter dated -----. As per my RL the last working day is ----.
In our meeting on (date) now here on wards quote exact words he has told you and your conversation
Please note that if you want me to leave early, please reimburse me for the balance notice period, if you are not willing to buy my notice period, I have no intention of leaving without serving my notice period.
I intend to faithfully observe the terms & conditions of my appointment. Please note these are the service conditions which you have created.
Please let me know no your intentions clearly .

Letter of appointment says, in any circumstance notice period will be minimum 30 days since acceptance of resignation. Does it mean I can be relieved 2 months before my actual end date without being paid for another 2 months ?

Dear Ravi 110011
Yes the notice period as per document is 30 days so you will be relieved in 30 days.
Warm Regards
Bharat Gera
HR Consultant