Salam! Is it permissible to do dhikr and recite durood internally (like in your mind) while showering? Worried that since you are in a bathroom, it is not allowed. Thank you!
Alaikumassalam wa rahmatullah,
Even reciting the Quran aloud in a bath/shower (not toilet) is permitted by many important scholars (Imam Malik, al-Nawawi). Reciting the Quran or doing dhikr in your mind only is permitted by even more scholars, and some say it is permitted everywhere (even in the toilet) if it is silent (Ibn al-Mundhir and Ibrahim al-Nakha`i). If the bathroom has a bathtub/shower and toilet, then once the shower curtain is opened then it seems to me that that part of the bathroom can be considered a separate place and would have that same ruling as a bath/shower lacking a toilet.
Fatwa by Shaykh Abd al-Rahman al-Suhaym