Al-Kāfi
Hadith 1076عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ هِشَامٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ ( عليه السلام ) قَالَ إِنَّ اللَّهَ عَزَّ وَ جَلَّ خَلَقَ ابْنَ آدَمَ أَجْوَفَ .
2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hisham from Zurarah who has said the following: “Abu Ja‘far (a.s.), has said, ‘Allah, most Majestic, most Glorious, has created the child of Adam hollow.’”