No other person's account is authentic.
lord mountbatten showed Liaquat a draft of the formula which was to be presented to jinnah for his approval, Liaquat was depressed seeing the formula
the meeting discussed the fate of three dominions "Kashmir..Junagadh and Hyderabad"
patel shrewdly included Hyderabad in the matter where d majority were hindu & nizam had't yet acceded.
the meeting and notes recorded (by mountbatten) nowhere mentioned that sardar patel made any such offer. of giving Kashmir and taking Hyderabad.
end of thread.