The One Praying Who Needs to Relieve Himself
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 54
وَ سَأَلَهُ حَنَانُ بْنُ سَدِيرٍ: أَ يُومِئُ اَلرَّجُلُ فِي اَلصَّلاَةِ فَقَالَ «نَعَمْ قَدْ أَوْمَأَ اَلنَّبِيُّ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ فِي مَسْجِدٍ مِنْ مَسَاجِدِ اَلْأَنْصَارِ بِمِحْجَنٍ كَانَ مَعَهُ » قَالَ حَنَانٌ وَ لاَ أَعْلَمُهُ إِلاَّ مَسْجِدَ بَنِي عَبْدِ اَلْأَشْهَلِ.
Hanan ibn Sadeer asked him: "Can a man gesture while praying?" Imam عليه السلام said: "Yes, the Prophet صلى الله عليه وعلى آله وسلم gestured in one of the mosques of the Ansar with a Muḥjan that he had with him." Hanan said: "And I do not know except that it was the mosque of the Banu Abd al-Ashhal."
- Ṣaḥīḥ al-Faqīh, p. 50