What is the ruling on selling in the courtyard of the mosque?

The Shaykh: Let us move on to another issue. I am genuinely surprised that he said, "He wears his shoes." What is the connection between wearing shoes or not wearing them, as long as the selling takes place in the mosque? There is no difference between what is called the sanctuary of the mosque and the courtyard of the mosque; it is all part of the mosque. The prohibition of selling in the mosque includes the mosque in both its parts. So I do not know what this shaykh he is referring to said to him: "There is no harm as long as you are wearing your shoes." What is this? He must see something between you and him... What is the secret of him wearing his shoes, or not?

The questioner : ... .

The Shaykh: He is saying: "I sell Islamic perfumes. After I finish my prayer, I put on my shoes inside the sanctuary. I put on my shoes inside the sanctuary, whether it is large or small, and I sell the perfumes. Is it permissible for me to sell inside the sanctuary of the mosque, knowing that I am wearing my shoes? Perhaps he means wearing his shoes. I asked the shaykh, and he told me there is no harm as long as I am wearing my shoes. But the matter became confused for me, and I need an answer. Answer: It is not permissible. Wearing or removing shoes is a purely formal matter, because you know that it is permissible for one to pray in his shoes...