The Prince of Wales accepted a suitcase containing a million euros in cash from a former Qatari prime minister, the Sunday Times has reported.
The paper says this was one of three cash donations from Sheikh Hamad bin Jassim totalling three million euros.
Clarence House said donations from the sheikh were passed immediately to one of the prince's charities and all the correct processes were followed.
There is no suggestion the payments were illegal.
According to the Sunday Times, Prince Charles received the three cash donations in person from the former prime minister between 2011 and 2015.
It is claimed that on one occasion the money was handed over in a holdall at a meeting at Clarence House. On another, the paper reported the cash was contained in carrier bags from the department store Fortnum and Mason.
In a statement, Clarence House said: "Charitable donations received from Sheikh Hamad bin Jassim were passed immediately to one of the prince's charities, who carried out the appropriate governance and have assured us that all the correct processes were followed."
https://www.bbc.co.uk/news/uk-61941113