Mahela Jayawardene and Thilan Samaraweera broke a 52-year-old record as they set a new mark for the highest fourth-wicket stand in Test cricket.
The Sri Lanka batsmen put on 437 against Pakistan to erase the record of English greats Peter May and Colin Cowdrey, who put on 411 in 1957.
Jayawardene scored 240 while Samaraweera made 231.
Sri Lanka finally declared on 644-7 with the hosts 44-1 at the close of play on day two of the first Test.
The prolific Jayawardene, who became the first Sri Lankan to pass 8,000 Test runs on Saturday, hooked up with Kumar Sangakkara to set the all-time mark of 624 in 2006 against South Africa.
The Sri Lanka captain's partnership with Samaraweera, who hit his maiden Test double century in the process, is the eighth highest overall in the history of Test cricket.
May and Cowdrey's previous mark came against the West Indies at Edgbaston.
The Sri Lanka batsmen put on 437 against Pakistan to erase the record of English greats Peter May and Colin Cowdrey, who put on 411 in 1957.
Jayawardene scored 240 while Samaraweera made 231.
Sri Lanka finally declared on 644-7 with the hosts 44-1 at the close of play on day two of the first Test.
The prolific Jayawardene, who became the first Sri Lankan to pass 8,000 Test runs on Saturday, hooked up with Kumar Sangakkara to set the all-time mark of 624 in 2006 against South Africa.
The Sri Lanka captain's partnership with Samaraweera, who hit his maiden Test double century in the process, is the eighth highest overall in the history of Test cricket.
May and Cowdrey's previous mark came against the West Indies at Edgbaston.