oneness of being, oneness of witnessing

I've been in a studious mood lately. Mostly I've been going over some basic fiqh by trying to see how much of Molana Ashraf Ali Thanvi's Bahishti Zewar I can read through before Ramadan comes in. (tick, tock) But I've also been trying to go deeper into some topics in aquidah and in the process I picked up a CD of Nuh Ha Mim Keller discussing what it means to be an Ashari where he mentions wahdat al-wujud. It just moved me to try to see if I could find a clearer exposition of the topic online and I found: Wahdat al-Wujud, Wahdat al-Shuhud and the Safest Position by Mufti Muhammad Taqi Usmani.

see also:
nothing unreal exists