Does rolling up the sleeves count as part of the tucking up (of clothes or hair) that is not allowed during prayer? If it is part of that tucking up, then is the ruling different if I start praying with my sleeves rolled up, i.e., I did not roll them up during the prayer – or is it the same thing?

It
is not permissible to roll up the sleeves or to fold them up before
the prayer or during the prayer so that they will not touch the ground
when doing sujood, because the Prophet
(peace and blessings of Allaah be upon him) said: “I have been commanded
to pray on seven bones and not to tuck up my hair or my clothes.” (Narrated
by al-Bukhaari and Muslim).

 And
Allaah is the source of strength. May Allaah bless our Prophet Muhammad
and his family and companions, and grant them peace.