All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
First of all, it should be mentioned that it is not an obligation to say Bismillaah (i.e. in the Name of Allaah) when performing ablution or Ghusl (i.e. ritual bath), or utter the mention of Allaah after completing ablution, rather it is desirable. We have already issued Fatwa 89224 clarifying that it is disliked to mention Allaah when performing ablution inside the toilet. If one does not say the mention upon completing ablution until he comes out of the toilet, then this is better.