Carrying
      dirty things whilst praying
Question

                Is it okay to keep
      things that might be dirty (like handkerchiefs, wallet & car keys) in
      our pocket while we pray? If not, are we supposed to keep them on the
      ground in front of us while we pray? Or by the side? Is it okay if it ends
      up in front of someone else, say in a congregational prayer?
Praise be to Allah.Dirty things are of two types: Things that
    are considered dirty or unclean according to sharee’ah because of najaasah
    (impurity), such as human urine or faeces, and things that are considered
    dirty by people, but they are not naajis according to sharee’ah, such as
    mucus and spittle. It is not permissible to carry the former or have them on
    one’s person whilst praying or to put them in the mosque; it does not
    matter if one carries the latter in one's pocket whilst praying. And Allaah
    knows best.