Bangladesh were earlier bowled out for 217 in their first innings, with Mushfiqur Rahim top-scoring with 51.

South Africa batted aggressively in their second innings, scoring at better than four runs an over.

Bangladesh left-arm spinner Taijul Islam took three for 67 to finish with match figures of nine for 202.

Opener Sarel Erwee top-scored for South Africa with 41.

The declaration came with a possible half-hour's play remaining on the third day although the floodlights were on in overcast conditions.