Praying in sandals is a recommended practice
Machine translationRead the Arabic original
The first question of Fatwa number ( 16539 )
Q 1: Is it permissible to pray wearing shoes at all times, even when
there is time to remove them, and there is no harm to him in removing them?
A 1: Praying in sandals is a recommended practice (sunnah), provided that they are pure from ritual impurity. If praying in them would result in dirtying the mosque carpets with dirt, one should not pray in them, due to the harm this causes to the Muslims. And success is from Allah, and may Allah send prayers and blessings upon our Prophet Muhammad, his family, and his Companions.
Q 1: Is it permissible to pray wearing shoes at all times, even when
there is time to remove them, and there is no harm to him in removing them?
A 1: Praying in sandals is a recommended practice (sunnah), provided that they are pure from ritual impurity. If praying in them would result in dirtying the mosque carpets with dirt, one should not pray in them, due to the harm this causes to the Muslims. And success is from Allah, and may Allah send prayers and blessings upon our Prophet Muhammad, his family, and his Companions.
Source
www.alifta.gov.sa
The Arabic text is copied verbatim from the original source, without any edits.