Al-Kāfi - Volume 1 > The Issue of Disappearance (of the twelfth Imam (a.s.) from Public Sight
Hadith #12

12ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ عَنِ الْقَاسِمِ بْنِ إِسْمَاعِيلَ الانْبَارِيِّ عَنْ يَحْيَى بْنِ الْمُثَنَّى عَنْ عَبْدِ الله بْنِ بُكَيْرٍ عَنْ عُبَيْدِ بْنِ زُرَارَةَ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ لِلْقَائِمِ غَيْبَتَانِ يَشْهَدُ فِي إِحْدَاهُمَا الْمَوَاسِمَ يَرَى النَّاسَ وَلا يَرَوْنَهُ.

12. Al-Husayn ibn Muhammad has narrated from Ja’far ibn Muhammad from al-Qasim ibn ’Isma‘il al-Anbari from Yahya ibn al- Muthanna from ‘Abdallah ibn Bukayr from ‘Ubayd ibn Zurara from abu ‘Abdallah (a.s.) who has said the following. “Al-Qa’im (the one who rise with Divine Authority) will disappear from the public sight twice. In one of them he will attain Hajj. He will see the people but they will not see him.”