There is a weak hadeeth supporting the second sentence. Therefore, this doesn’t nullify the prayer. However, saying sadaqa Allahu alatheem, this is not part of the Quran and it is not part of the prescribed thikr. Therefore, it is most likely affects the prayer negatively and shouldn’t be said.

Sheikh, I want to ask if while praying and somebody finishes resiting suratul teen and at the end of the surah that person says sadha qallahu aladeem or balaa ya raab does that nullify that person’s praying?

Prayer |