Al-Kāfi

Hadith 1487
repentance
10ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنِ الْحَسَنِ بْنِ عَلِيٍّ عَنْ أَبَانٍ عَنْ إِسْحَاقَ بْنِ عَمَّارٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ لا يَدْخُلُ مَكَّةَ رَجُلٌ بِسَكِينَةٍ إِلاَّ غُفِرَ لَهُ قُلْتُ مَا السَّكِينَةُ قَالَ يَتَوَاضَعُ.
10. Al-Husayn ibn Muhammad has narrated, from Mu‘alla’ ibn Muhammad, who has narrated from af-Hassan ibn Ali from Aban, from Ishaq ibn ‘Ammar who has said the following: “Abu ‘Abd Allah (a.s.), has said that whoever enters Makkah in a dignified manner his sins are forgiven. I (the narrator) then asked, ‘What is a dignified manner?’ He (the Imam) replied, ‘It is humbleness.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī