Don’t be a thief
The Messenger of Allah (peace and blessings of Allaah be upon him) said:
“The worst human thieves are those who steal their prayer.” (People) asked: “O Messenger of Allah, how do they steal their prayer?” (The Messenger of Allah (peace and blessings of Allaah be upon him) said: “Without properly completing the bow and prostration. The stingiest of people are those who skimp on greeting / salam. ”
“Sahih at-targib va-t-tarhib” 525,