Pesukei d'zimra
should be recited in an unhurried manner, like someone who is counting his money,
with care not to swallow or skip words. Some
sefarim
warn that a person who does not recite the words carefully is banished from Heaven. Some Acharonim advise spending half an hour on the recitation of
pesukei d'zimra
. One should not hold a valuable or dangerous item in his hands while
davening
, since fear of dropping the item could distract his attention. Other
poskim
say that a person should not hold anything while davening except a
siddur.
(
סעיף ח וס"ק כ; ביאורים ומוספים דרשו, 23)