Sajdah and Jalsah

Reciting the Tasbeehaat of Salaah is such a way that one can hear himself

Q: I have a question with regards to method of performing salaah. If one is performing salaah, whether alone or in jamaah, should the person recite his tasbeehat in a manner that the next person can audibly hear what he is reading or should the brother read it softly so that the next brother cannot hear what the brother is reading. 

Making Dua in Salaah in any other language besides Arabic

Q: If a person is incapable of making du’ā in Arabic during his salāh, may he make du’ā in any other language? I read that if he is able to make du’ā in Arabic, then there exists a difference of opinion in the permissibility of doing so in a different language while in salāh. According to Imām Abū Yūsuf and Imām Muhammad, it is impermissible and the prayer will not be valid.  On the other hand, according to Imām Abū Hanīfah, the prayer will be valid, but it is makrūh (disliked) to do so. Is this true? But the question is what if a person is incapable of making du’ā in Arabic during his salāh? Is it permissible without being makruh?