According to state broadcaster SABC
The report is mentioning that the South African presidency will be seeking clarification from the US embassy on Trump's tweet earlier this morning on the country's land reform policy. Eamonn had the post up earlier here in case you missed it.
The ZAR weakened after Trump posted the tweet but has been making a bit of a recovery in the last half-hour as the dollar is giving back some of its earlier gains across the board.