What is said in the two prostrations of forgetfulness and between them, and is what is said in the obligatory prayer also said?

There is no specific dhikr (remembrance) prescribed for the prostrations of forgetfulness (sujood al-sahw). Rather, what is said in them is what is said in the prostrations of prayer, such as the glorification "Subhana Rabbi al-A'la" (Glory be to my Lord, the Most High) and supplication, because a servant is closest to his Lord while prostrating. And what is said between them is what is said between the two prostrations of prayer, such as "Rabb ighfir li" (My Lord, forgive me). Al-Nawawi and others have explicitly stated that the two prostrations of forgetfulness are like the two prostrations of prayer in their form and remembrance. There is no basis for what is mentioned regarding the recommendation to say: "Subhana man la yanamu wa la yashoo" (Glory be to Him who neither sleeps nor forgets).