It is narrated from Hazrat Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) used to pray while standing and also while sitting, both after removing his shoes and while wearing them.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 7384
Hadith Gradingحکم دارالسلام:صحيح لغيره، وفي هذا الإسناد أبو الأوبر، وهو لا يعرف.