Al-Kāfi - Volume 4 > The Rare Ahadith about Tawaf
Hadith #3

3ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عَبْدِ الْكَرِيمِ بْنِ عَمْرٍو عَنْ أَيُّوبَ أَخِي أُدَيْمٍ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) الْقِرَاءَةُ وَأَنَا أَطُوفُ أَفْضَلُ أَوْ أَذْكُرُ الله تَبَارَكَ وَتَعَالَى قَالَ الْقِرَاءَةُ قُلْتُ فَإِنْ مَرَّ بِسَجْدَةٍ وَهُوَ يَطُوفُ قَالَ يُومِىُ بِرَأْسِهِ إِلَى الْكَعْبَةِ.

3. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from ‘Abd al-Karim ibn ‘Amr from Ayyub brother of ‘Udaym who has said the following: “I once asked abu ‘Abd Allah, ‘Alayhi al-Salam, about reading from al-Quran or speaking of Allah, most Blessed, most High, and that which one is more virtuous when I perform Tawaf. He (the Imam) said, ‘Reading is more virtuous.’ I then asked, ‘What happens if one comes across a passage for which Sajdah (prostration) is obligatory.’ He (the Imam) said, ‘He must make a gesture with his head toward al-Ka‘bah.’”