Al-Kāfi - Volume 4 > Entering Makkah
Hadith #5

5ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادِ بْنِ عُثْمَانَ عَنِ الْحَلَبِيِّ قَالَ أَمَرَنَا أَبُو عَبْدِ الله (عَلَيْهِ السَّلاَم) أَنْ نَغْتَسِلَ مِنْ فَخٍّ قَبْلَ أَنْ نَدْخُلَ مَكَّةَ.

5. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Umayr from Hammad ibn ‘Uthaman from al-Halabiy who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, commanded us to take Ghusl (bath) from Fakhkh before entering Makkah.”