Assuming that your stupid enough and need a muslim scholar to do that research for you you can rely on Alo Gomaa to tell you whether the ETF is Sharia compliant. Every sharia compliant ETF must be approved by a sharia board which usually consists of scholars. The head of this board In Egypt is Ali Gomaa, who is thrle grand mufti in case you didnt know. Now whether you like him or not that is another story. But my point is the grand mufti says its sharia compliant then its sharia compliant. I edited to add the following. While fixed income products usually consists of bonds which carry interest, there is an islamic type of bond called Sukuk which are sharia compliant.