Dale Steyn claimed five wickets as South Africa closed out an innings and 129-run victory over Bangladesh in Bloemfontein.
After two-thirds of the third day were washed out, the hapless tourists resumed their second innings on 3-67 - a remaining deficit of 221.
Captain Mohammad Ashraful (13) was the first to fall on the fourth morning, edging Makhaya Ntini, who had moved round the wicket, to Neil McKenzie at gully.
Shakib Al Hasan followed in the next over, and without troubling the scorers, when he snicked a short ball from Steyn (5-63) behind to Mark Boucher.
Bangladesh was 5-81 at that stage, and they then lost another wicket on the same score as Mushfiqur Rahim, who had faced just two balls, was run out by Mehrab Hossain jnr as he attempted a quick single. Ashwell Prince collected in the covers and threw sweetly to Hashim Amla who took off the bails.
A seventh wicket fell with the score on 92 as Naeem Islam (3) nudged at a well-directed delivery from Steyn and edged behind.
Four overs later Steyn claimed a fourth victim, uprooting Mashrafe Mortaza's off stump.
That left the Tigers at 8-108, but Mehrab (43 not out) and Shahadat Hossain (16) then launched a mini-revival to take the score on to 9-152.
It was Steyn once more who ended that stand as he completed a ninth Test five-for by knocking over Shahadat's off stump after the batman's wild swing.
Mahbubul Alam was the last man to perish, for a duck, as he holed out to Prince off Jacques Kallis.
South Africa 1st Innings 9/441 (dec.)
Bangladesh 1st Innings 153
Bangladesh 2nd Innings
Tamim Iqbal c Boucher b Ntini 20
Imrul Kayes b Steyn 4
Junaid Siddique c Boucher b Kallis 27
Mohammad Ashraful not out 7
Mehrab Hossain jnr not out 43
Shakib Al Hasan c Boucher b Steyn 0
Mushfiqur Rahim run out (Prince) 0
Naeem Islam c Boucher b Steyn 3
Mashrafe Mortaza b Steyn 6
Shahadat Hossain b Steyn 16
Mahbubul Alam c Prince b Kallis 0
Extras 27 (b 7, lb 17, nb 3)
Total 159 (all out; 51.5 overs, 245 mins)
FoW: 1-13 (Imrul Kayes, 2.3 ov), 2-45 (Tamim Iqbal, 15.5 ov), 3-67 (Junaid Siddique, 23.5 ov), 4-80 (Mohammad Ashraful, 31.6 ov), 5-81 (Shakib Al Hasan, 32.4 ov), 6-81 (Mushfiqur Rahim, 33.4 ov), 7-92 (Naeem Islam, 36.6 ov), 8-108 (Mashrafe Mortaza, 40.5 ov), 9-152 (Shahadat Hossain, 48.5 ov), 10-159 (Mahbubul Alam, 51.5 ov)
Bowling
Steyn 18-4-63-5
Ntini 16-8-19-2
Morkel 13-6-36-0 (3nb)
Kallis 4.5-0-17-2