عَن عَوْف بن مَالك قَالَ: قُمْتُ مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَمَّا رَكَعَ مَكَثَ قَدْرَ سُورَةِ الْبَقَرَةِ وَيَقُولُ فِي رُكُوعِهِ: «سُبْحَانَ ذِي الْجَبَرُوتِ والملكوت والكبرياء وَالْعَظَمَة» . رَوَاهُ النَّسَائِيّ

Abu Qatada reported God’s Messenger as saying, “The one who commits the worst theft is he who steals from his prayer.” When asked how one could steal from his prayer he replied, “By not performing his bowing and his prostration perfectly.” Ahmad transmitted it.