The supplication of the prostration of forgetfulness (sajdah as-sahoo)
*Please appropriately reference this fatwa to: www.fatwa-online.com, thankyou!*
Question: What is to be said in the sajdah as-sahoo (the prostration of forgetfulness), and may Allaah reward you with good?

Response: One says in the sajdah as-sahoo (the prostration of forgetfulness) what one says in the prostration of the (regular) prayer, (namely) Subhaana Rabbee al-A'laa, and one supplicates as one does so in the prostration of the (regular) prayer - there being no difference between the two based upon the generality of the proofs/evidences, and there being no evidence that the prostration of forgetfulness has a specific supplication, and Allaah knows best.

Shaykh Saailh ibn Fowzaan
al-Muntaqaa min Fataawa Shaykh Saalih al-Fowzaan - Volume 5, Page 39, Fatwa No.56