Chapter on What is Permissible to Pray in, from Clothing and Place, and What is Not Permissible to Pray in, from That

And it was narrated from one of the two (Imams عليه السلام), peace be upon them, who said: I said: "A man prostrates while wearing a cap or a turban?" He said: “If something from his forehead touches the ground, between his eyebrows and the beginning of his hairline, then it is sufficient for him."