Chapter on the Detailed Explanation of Prayer, Including the Obligatory and Recommended, and What is Permissible and Not Permissible.

Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 9

Tahdhīb al-Aḥkām

Volume 2, Book 1, Chapter 9

Chapter on the Detailed Explanation of Prayer, Including the Obligatory and Recommended, and What is Permissible and Not Permissible.

Hadith #111

وَ عَنْهُ عَنِ اَلْحَسَنِ عَنْ فَضَالَةَ عَنْ حُسَيْنِ بْنِ عُثْمَانَ عَنْ سَمَاعَةَ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: «اَلْوَتْرُ ثَلاَثُ رَكَعَاتٍ إِلَى زَوَالِ اَلشَّمْسِ فَإِذَا زَالَتْ فَأَرْبَعُ رَكَعَاتٍ»

And from him, from al-Hasan, from Fadalah, from Husayn ibn Uthman, from Sama’ah, from Abu Basir: Abu Abdillah said: "‘Witr’ is (prayed as) three rak’ahs until the sun passes its zenith (zawal), but once it has passed, then it is (prayed as) four rak’ahs."

Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 176