Former finance minister Lim Guan Eng has questioned Dr Mahathir Mohamad's memory, calling it "faulty" after the former premier singled him and his former advisor out in the nonagenarian's upcoming book.

The DAP secretary-general said during his 22-month tenure as the finance minister, he had many trusted advisors including the ministry's secretary-general and his deputy.

"It is not fair of Mahathir to...