I have put the ashes on the thing and the monkey thing to. What do I do next and where do I put the Relic?

Have you talked to Kerah yet?

If you haven't, search for a southeast passageway off of room with Anephas' altar. You will need to move the statue in front of the passageway to enter. Explore that area and you should find Kerah. From Kerah you need to get a Light Obelisk. Be certain to explore her area complete before coming back down into the pyramid. Once you come back down, you can't go back to see Kerah again.

Wyv

What statue the mummy thing? It won't go back it just stops? If not what does the statue look like?

As I recall the statues (there are two in the room) looked like Horus seated.

Use "Carry" to try to drag them out of the way in the Anephas altar room, don't push them down the passageway they block.

Wyv