Meanwhile at a LGBT Pride march in Glasgow, Scottish first minister Nicola Sturgeon said she had been a "wee bit tickled" by reports Mr Trump "hates her" and has been complaining about her to Theresa May.
When asked if the president had repeatedly criticised him because he was Muslim, Mr Khan said it was not for him to answer and added that he did not think Mr Trump was racist.
Trump's history with Scotland traces to his mother, who grew up on the Scottish Isle of Lewis in a village called Tong. She later immigrated to the US, where she met and married Trump's father, the son of German immigrants.
"People in Scotland have been so enthusiastic".
Even before his visit, his golf courses in Scotland had been the focus of controversy.
In an uproarious trip to Europe, Trump harangued members of the North Atlantic Treaty Organisation military alliance, scolded Germany for its dependence on Russian energy and shocked Britain by publicly criticising Prime Minister Theresa May's Brexit strategy.
Police Scotland said a 55-year-old man had been arrested and charged in connection with the stunt organised by Greenpeace, which saw the paraglider hover within surprising proximity of Mr Trump on Friday evening. "I will absolutely bring that up", Trump told reporters.
Harry and Meghan visit Dublin: Duchess not afraid to shake off protocol
But our friendship is still exactly the same, ' she said. "I'd argue that's worth every penny", she told Entertainment Tonight . She's someone that I've always looked up to for her style.
"He has that thing where 'it's me, ' " said Godley, " 'It's Donald". Throw money, your house is a tip, get it pulled down, ' and the people went.
"But what this can make a difference to is the people in the U.S. who are organising against him".
The SNP government overturned the councillors' decision shortly after golf-loving nationalist Alex Salmond took control, kicking off a short and tempestuous bromance with Trump who called Salmond "an fantastic man".
The deal had little of the controversy around his Aberdeenshire development, with questions only raised over the decision to change the name of the resort to Trump Turnberry.
He followed it up with another tweet in which he reaffirmed his plans to meet with Vladimir Putin in Helsinki on Monday, in which he has been urged to raise the death of a woman who was exposed to novichok in Amesbury.
From the capital of Edinburgh to seaside golf resorts, thousands in Scotland staged colourful, peaceful protests against Donald Trump on Saturday as the United States president played golf at one of his luxury retreats.
But Trump was also keeping tabs on domestic issues, including the investigations into Russian election meddling. The New York Times reported that the indictment "includes a litany of brazen Russian subterfuge operations meant to foment chaos in the months before Election Day". More anti-Trump protests are taking place Saturday in other parts of Scotland, including one with some 10,000 people in Edinburgh.
In the most detailed USA accusation to date that Moscow meddled in the presidential election, a federal grand jury said Russia's military intelligence agency officers covertly monitored computers of Clinton's campaign and Democratic campaign committees, and stole large amounts of data.