Al-Kāfi - Volume 4 > Entering Makkah
Hadith #7

7ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ وَسَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ أَبِي نَصْرٍ عَنْ عَلِيِّ بْنِ أَبِي حَمْزَةَ عَنْ أَبِي الْحَسَنِ (عَلَيْهِ السَّلاَم) قَالَ قَالَ لِي إِنِ اغْتَسَلْتَ بِمَكَّةَ ثُمَّ نِمْتَ قَبْلَ أَنْ تَطُوفَ فَأَعِدْ غُسْلَكَ.

7. A number of our people have narrated from Ahmad ibn Muhammad from and Sahl ibn Ziyad from Ahmad ibn Muhammad from ibn abu Nasr from Ali ibn abu Hamzah who has said the following: “Abu al-Hassan, ‘Alayhi al-Salam, once said to me, ‘If you take Ghusl (bath) in Makkah then go to sleep, then before Tawaf, take Ghusl (bath) again.’”