With this same chain, the Messenger of Allah (peace and blessings be upon him) said: "The worst thief is the one who steals from his prayer." It was asked: O Messenger of Allah! How does he steal from his prayer? He (peace and blessings be upon him) said: "He does not complete its bowing nor its prostration."
Hadith Referenceمسند اسحاق بن راهويه / كتاب الصلوٰة / 174
Hadith Takhrij«مسند احمد : 310 . صحيح الجامع الصغير ، رقم : 986 . صحيح ترغيب وترهيب ، رقم : 524 .»
Explanation & Benefits
Hafiz Abdush Shakoor Tirmidhi
Benefits: From the aforementioned hadith, it is understood that not performing bowing (ruku) and prostration (sujud) completely is a form of theft, and the prayer of a person who does not complete the bowing and prostration is also invalid.
As it is narrated that Sayyiduna Hudhayfah radi Allahu anhu saw a man who was not performing bowing and prostration completely, he radi Allahu anhu said to him: "You have not prayed at all, and if you die in this state, your death will not be upon the Sunnah on which Allah, the Exalted, created Muhammad sallallahu alayhi wa sallam." (Bukhari, Kitab al-Adhan, No: 791) Thus, it is understood that bowing and prostration should be performed with tranquility.