Question Summary:
Does going in the path of Allah and becoming hafiz certify you to sin?

Question Detail:

I have question regarding status of entering Jannath 
I know a guy who is a Quran Hafiz, but plays with many girls life. I mean making them fall in trap of love and flirt with them and disturb their lives. 
Another guy who constantly goes in Tabligh. But he will act infront of others as if good and do things behind back. He has done wrong to many friends behind their back like making police complain against them, emailing to professors bad about them. But he constantly goes in Jamath.
If according to hadiths from my knowledge, A Quran Hafiz enters jannath and a person who goes in the path of Allah swt, his sins are forgiven. 
Then can anyone become hafiz or goes in the path of Allah swt and performs sin?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
It is our belief that every human being, irrespective of his status being a Mujahid, a Wali, an Aalim or Hafiz etc. can sin. The Prophets of Allah (Alaihimus Salaam) are excluded from this. They are ma’soom (sinless persons). The friends of Allah are generally mahfooz (saved) and protected from sins due to their consciousness and level of restraint.
 
In the enquired situation, the conduct of the Hafiz and the person going out in Jamaat is unfortunate. However, our focus should be on the positive aspects of people. The Hafiz has the kalaam (speech) of Allah in his heart. The person who joins Jamaat is conscious of Allah. An effort should be made to make them realise their real worth Allah granted them. Apply wisdom and diplomacy in making them make Taubah and reform. Insha’Allah, with the barakah of the Qur’aan and Allah consciousness, they will respond positively to the call of change and reformation. It is then will they represent the following Hadith.
 
Nabi (SAW) mentioned:
“Whoever recites the Qur’aan, memorizes it, accepts what it has made Halaal as lawful and what it has made Haraam as unlawful (acts upon the laws), Allah Ta’āla will grant him entry into Jannah and will accept his intercession  for ten of his family members who were destined for Jahannam.” (Tirmizi)^[1]
 
And Allah Ta’āla Knows Best
Safwaan Ibn Ml Ahmed Ibn Ibrahim  
Student Darul Iftaa
Limbe, Malawi
Checked and Approved by,
Mufti Ebrahim Desai.
_______________________________
تحفة الألمعى  - (7/60) – زمزم پبلشز[1]