The statement of Allah تَعَالَى :
“O you who believe! Be afraid of Allah, and be with those who are true (in words and deeds),” Quran 9:119.
What is forbidden as regards telling of lies.
Narrated ‘Abdullah رَضِىَ اللهُ عَنْهُ : The Prophet صَلَّى اللهُ عَلَيْهِ وَ سَلَّمَ said, “Truthfulness leads to Al-Birr (righteousness) and Al-Birr (righteousness) leads to Paradise. And a man keeps on telling the truth until he becomes a truthful person. Falsehood leads to Al-Fujur (i.e. wickedness – evildoing), and Al-Fujur leads to the (Hell) Fire, and a man keeps on telling lies until he is written as a liar before Allah.” (Sahih Al-Bukhari, Vol. 8, Hadith No. 116).
Narrated Abu Hurariah رَضِىَ اللهُ عَنْهُ : The Messenger of Allah صَلَّى اللهُ عَلَيْهِ وَ سَلَّمَ said, “The signs of a hypocrite are three: Whenever he speaks, he tells a lie; and whenever he promises, he brakes his promise; and whenever he is entrusted, he betrays (proves to be dishonest) .” (Sahih Al-Bukhari, Vol. 8, Hadith No. 117).
Doers of Good
Muhsinun (Doers of Good), i.e. those who perform good deeds totally for the sake of Allah only, without any show-off nor to gain praise or fame, etc., and they do them in accordance with the Sunnah (legal ways) of The Messenger of Allah, Muhammad صَلَّى اللهُ عَلَيْهِ وَ سَلَّمَ .
What is said regarding the superiority of a person who embraces Islam sincerely.
Islam demolishes all the previous evil deeds and so do migration (for the sake of Allah) and Hajj (pilgrimage to Mecca). (Sahih Muslim, Vol. 1, Chapter 58, page 18).
Narrated Abu Sa’id Al-Khudri رَضِىَ اللهُ عَىْهُ : The Messenger of Allah صَلَّى اللهُ عَلَيْهِ وَ سَلَّمَ said, “If a person embraces Islam sincerely, then Allah shall forgive all his past sins, and after that starts the settlement of accounts: the reward for his good deeds will be ten times to seven hundred times for each good deed, and an evil deed will be recorded as it is unless Allah forgives it.” (Sahih Al-Bukhari, Vol. 1, Hadith No. 40 A).