South Africa's batsmen thwarted Pakistan's spin attack to reach 84-1 at tea on the third day of the first Test in Karachi on Thursday.
SCORECARD | Pakistan v Proteas, 1st Test
South Africa were off to a confident start with Markram and Dean Elgar defying Pakistan's attack, and were 37 without loss at lunch.
South Africa's pace spearhead Kagiso Rabada bowled Hasan Ali for 21 to reach 200 wickets in his 44th Test.
Yasir, who scored a Test century in Australia in 2019, hit a six and four fours in his 38 not out, while debutant Nauman scored three boundaries before falling for 24.