الكافي- ط الاسلامية, volume 2, page 434

6. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from al-‘Ala’ from Muhammad ibn Muslim from abu Ja’far (a.s.) who has said the following: “Once abu Ja’far (a.s.) said, ‘O Muhammad ibn Muslim, if believing people repent for their sins they will be forgiven. Believing people must resume their good deeds after repentance and forgiveness. By Allah, this is only for the believers.’ I then asked, ‘What if he goes back to sin after repenting and asking for forgiveness and repents again?’ The Imam said, ‘O Muhammad ibn Muslim, do you think a believing servant (of Allah) regrets his sins, asks forgiveness and repents but Allah does not accept his repentance?’ I said, ‘He, however, has done it many times. He sins, repents and asks forgiveness (from Allah).’ The Imam said, ‘Whenever a believing servant (of Allah) returns back for repentance and pleas for forgiveness, Allah returns to him with forgiveness; Allah is forgiving and merciful. He accepts repentance and effaces the evil deeds. You must never cause a believer to lose hope in the favor and mercy of Allah.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

7. Abu Ali al-Ash’ari has narrated from Muhammad ibn ‘Abd al-Jabbar from ibn Faddal from Tha’labah ibn Maymun from abu Basir who has said the following: “Once I asked Abu ‘Abdillah (a.s.) about the words of Allah, the Most Majestic, the Most Holy, ‘When a Satanic thought starts to bother the pious ones, they understand and see the light.’ (7:201) The Imam said, ‘It means that a servant (of Allah) intends to commit an evil deed then he realizes it and holds back and that is indicated in His words, ‘They understand and see.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.