Actually Zainab, other than the obvious replacement of Mash, if it were up to me, I'd replace both Rock and Ash for the second test. Again, I'm not axing them from the squad, just the XI for the 2nd Test. We have other options, so why not attempt to exploit them?
Ash -> MJ
Rock -> Enam/Nazmul (based on pitch conditions; owing to the fact that we're already playing an extra batsman; and assuming that Robin will be replacing Mash)
Screw the IPL, I'm going to the MLC