Wasim Akram and Saqlain Mushtaq hold the record for the highest partnership for the 8th wicket in test cricket.
Wasim and Saqlain put on 313 runs for the 8th wicket against Zimbabwe at Sheikhapura in 1996. That record still stands.
Wasim Akram's 257 at that time was the highest score by a Pakistani captain in tests; that record was broken by Younis Khan earlier this year.
Wasim Akram created another record during that innings; his 12 sixes remains the highest number of sixes hit in a test innings.