Al-Kāfi - Volume 4 > Taqsir (Trimming something from One’s Hair or Nails After Completing Sa‘y) of One Who Is for al-Hajj al-Tamattu‘ (advantageous) and Coming Out of the State of Ihram
Hadith #3

3ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ أَبِي نَصْرٍ عَنْ رِفَاعَةَ بْنِ مُوسَى قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَم) عَنِ الرَّجُلِ يَطُوفُ بِالْبَيْتِ وَيَسْعَى أَ يَتَطَوَّعُ بِالطَّوَافِ قَبْلَ أَنْ يُقَصِّرَ قَالَ مَا يُعْجِبُنِي.

3. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from ibn abu Nasr from Rifa‘ah ibn Musa who has said the following: “I once asked abu ‘Abd Allah, ‘Alayhi al-Salam, about a man who performs Tawaf around the House and Sa‘y between al-Safa’ and al-Marwah; if he can perform an optional Tawaf before Taqsir (cutting some hair or finger nails and so on). He (the Imam) said, ‘It is not admirable to me.’”