In the Patrologia Orientalis 13 and 19 is a collection of deeds and sayings attributed to Jesus in Muslim sources of the 10th-11th century. This was edited by Miguel Asin y Palacios in 1919 and 1924. Asin apparently took the curious view that these went back to the 1st century. (Anyone familiar at all with Arabic literature will be aware how much story-telling and elaboration features in it, so we need not take that opinion very seriously!) But it is good to have these things, since they will undoubtedly pop up in odd places.
Anthony Alcock has started to translate this edition into English, and he has kindly made it available online to us all, with an explanatory introduction. Here is the first part:
Enjoy!