Found a weird clause in my sale deed

Bought a builder floor (4bhk) in a 3 floor building in NCR in 2023. All formalities were completed in time and I am the owner right now. However, the builder did keep a ground floor (2bhk) appt with him and is now being little problematic (to say the least) about it.

Since the sale deed was in proper proper Hindi, I missed out on few strange clauses in it earlier which I have found now after putting the whole text in translator. The most weird one is below:

"Regarding the mentioned floor, the second party will not file any complaint/FIR in the future against the first party in any office or department (such as any police post, station, police station, court, Uttar Pradesh Housing and Development Authority, etc.). If he does so, it will be considered illegal."

Just want to understand from people who know law/real estate well, is it even legal to put something like this in sale deed ? And how can it be a problem for me in future ?

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Edit 1: Thank you all for your insights on this so far. Really good to know that this clause in the sale deed will not hold water in court.

I have shared this in a couple of comments below but for future readers adding the more context on the builder being a "little problematic" part here itself.

The builder is a little goon-ish type (aren't all ?). He retained the ground floor apartment with him— it is properly illegal, as it was supposed to be full stilt parking. But he carved a flat out from half the parking space, which of course is not sellable now (given it is not on the map and can't be registered). When he couldn't get a deal on it for some time he put some boys there on rent and they are being a nuisance (bringing crowds, creating noise late night, creating smoke by lighting fire inside during winters) for the families living on above 3 floors. They are his relatives so the whole family also visits at times, maybe to show number strength to us.

One big mistake that we made was we regretfully agreed to not mention stilt parking spot in the sale deed. Because he cajoled us that it will increase the price and the stilt parking, which has space for 4 vehicles, is enough for 3 floors above. He specifically mentioned that the ground floor will not have any rights on stilt parking— I have the full deal conversation on audio (no one knows about it so far and I don't think I can't even use it as per law).

On complaining about the nuisance that boys create, he says that you are only your floor's owner as per registry so you can't comment on what others are doing inside their home. Now, he also broaches the topic of us using covered(stilt) parking when it is not even in the registry.😒