Pakistan's Mohammad Asif took five wickets to lessen the impact of Ashwell Prince's century for South Africa on the third day of the first Test on Saturday.

Pakistan reached tea on 12 without loss in their second innings, a deficit of 92 runs.

South Africa were dismissed for 417 in reply to Pakistan's first innings of 313. Prince scored 138, while fast bowler Asif, playing his first match for his country since he and Shoaib Akhtar tested positive for the banned steroid nandrolone in November, took five for 89.

Prince, who took guard when South Africa's third wicket fell six overs after lunch on Friday, was finally removed with what became the last ball before lunch on Saturday when leg-spinner Danish Kaneria had him stumped by wicketkeeper Kamran Akmal.

The left-handed Prince advanced down the pitch to Kaneria and failed to make contact. Akmal gathered cleanly but missed with his first swipe at the stumps.

Prince scrambled back towards safety, but Akmal removed the bails just in time to send the South African packing.

The patient, diligent Prince batted for almost six hours in which he faced 214 balls and hit 19 fours.

His dismissal ended a dominating fifth-wicket stand of 213 that he shared with Herschelle Gibbs.

Prince's demise also began a slide in which five wickets tumbled for 35 runs. Among them was Gibbs, who was seventh out for 94 when he was trapped in front by fast bowler Naved-ul-Hasan.

South Africa's chances of building a significant lead seemed to be on the wane, but Shaun Pollock scored a brisk unbeaten 39 off 58 balls with five fours and a six to extend the home side's advantage to 104 runs.

Asif completed his five-wicket haul when he had Makhaya Ntini caught by Younis Khan at second slip for five to end the innings.

Mohammad Hafeez was nine not out at tea with Imran Farhat on three.

Scorecard

Pakistan (1st innings) 313

South Africa (1st innings, 254-4 overnight)
A de Villiers c Younis Khan b Mohammad Asif 4
G Smith c Kamran Akmal b Mohammad Asif 0
H Amla c Kamran Akmal b Mohammad Asif 71
J Kallis c Younis Khan b Mohammad Asif 18
A Prince st Kamran Akmal b Danish Kaneria 138
H Gibbs lbw b Naved-ul-Hasan 94
M Boucher c and b Kaneira 2
S Pollock not out 39
P Harris b Danish Kaneria 3
A Nel b Naved-ul-Hasan 5
M Ntini c Younis Khan b Mohammad Asif 5
Extras (lb-13 nb-25) 38

Total (all out, 117.5 overs) 417

Fall of wickets: 1-3 2-8 3-53 4-143 5-356 6-358 7-383 8-386 9-391.

Bowling: Mohammad Asif 27.5-4-89-5 (nb-15), Naved-ul-Hasan 17-2-92-2 (nb-1), Shahid Nazir 20-1-96-0 (nb-9), Danish Kaneria 41-8-97-3, Mohammad Hafeez 11-1-24-0, Imran Farhat 1-0-6-0.

Pakistan (2nd innings)
Mohammad Hafeez not out 9
Imran Farhat not out 3

Total (for no wkt, 5 overs) 12

Bowling: Nel 3-2-2-0, Ntini 2-0-10-0.