He repeatedly criticized Michelle Obama for not wearing a headscarf while in Saudi Arabia. Both his wife and his daughter, who accompanied him on the trip, have repeatedly appeared in public without a headscarf.
On many occasions, Trump lambasted President Obama for not using the phrase "radical Islamic terrorism" when speaking with Middle Eastern countries. On this trip, Trump has avoided using the phrase (source here).
But this is what really takes the cake for hypocrisy: "We are not here to lecture," Trump told the Muslim audience. "We are not here to tell other people how to live, what to do, who to be."
That's exactly what Trump and his theocratic absolutists in his administration are repeatedly doing: telling LGBT Americans and other minorities what they can or cannot do, what bathroom they can use, what medical procedures are prohibited, and more.
Trump has no shame. Hopefully more and more people will be angered by his hypocrisy and work to weaken him during the 2018 midterms.