عن أبي سعيد الخدري رضي الله عنه أن رسول الله صلى الله عليه وسلم قال: إن أسوأ الناس سرقة الذي يسرق صلاته قالوا : يا رسول الله وكيف يسرقها قال: لا يتم ركوعها ولا سجودها (مجمع الزوائد رقم2720)

Hazrat Abu Sa‘eed Khudri (radhiyallahu ‘anhu) reports that Rasulullah (sallallahu ‘alaihi wasallam) said, “Indeed the worst of people involved in theft is the person who steals from his salaah.” The Sahaabah (radhiyallahu ‘anhum) enquired, “O Rasul of Allah (sallallahu ‘alaihi wasallam)! How does one steal from his salaah?” Rasulullah (sallallahu ‘alaihi wasallam) replied, “He does not perform the rukoo and sajdah in the correct manner. (though in this Hadith, rukoo’ and sajdah are mentioned, it will also apply to the other postures of salaah)”