For what it is worth, the Marula tree grows to a great height in north eastern parts of Southern Africa and Mozambique. It is a very beautiful tree, with a very large trunk diameter, and has many uses. It bears a large nut, from which the oil is extracted, and has been for hundreds of years by indigenous peoples, and used for many purposes, medicinal and otherwise (brewing a liquor).The oil is pure and pleasant, and if I was satisfied that it was unadulterated, would regard it as quite safe, pleasant, and beneficial.
It is a favorite food of the African Elephant, and thereby which hangs a tale. In the early part of the flowering season, the elephants digest huge numbers of the nuts, which ferment in the gut, and the elephants become drunk, and behave in a most humorous and entertaining manner.
There is also a “designer” cream liqueur, rather like Baileys, the Irish one, Called Marula Cream, which uses Marula distilled liquor, rather than Irish Whisky.
I personally would have no qualms about using a soap with Marula oil for an enema. However, I suspect that in a commercially made soap,the amount of Marula oil it contains would be very very small.
I wait to hear any comments from those who have tried it, but if you can recognize the difference when having an enema with it, you must have, as they say in wine circles, a “very discerning nose”