Chapter on Fasting with Authorization
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 2|Chapter 31
وَ رَوَى سَمَاعَةُ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: «كَانَ رَسُولُ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ إِذَا دَخَلَ اَلْعَشْرُ اَلْأَوَاخِرُ شَدَّ اَلْمِئْزَرَ وَ اِجْتَنَبَ اَلنِّسَاءَ وَ أَحْيَا اَللَّيْلَ وَ تَفَرَّغَ لِلْعِبَادَةِ».
Sama’ah narrated from Abu Basir, from Abu Abdullah عليه السلام who said: "The Messenger of Allah سبحانه وتعالى, peace be upon him and his family, when the last ten nights (of Month of Ramadan) arrived, would tighten his waistbelt, avoid women, revive the nights (with worship), and dedicate himself fully to worship."
- Ṣaḥīḥ al-Faqīh