Chapter on the Manner of Prayer, Explanation of the Fifty-One Rak‘ahs; The Order, Recitation, Tasbih in Bowing and Prostration, Qunut, and What is Obligatory and Recommended Therein
Chapter on the Manner of Prayer, Explanation of the Fifty-One Rak‘ahs; The Order, Recitation, Tasbih in Bowing and Prostration, Qunut, and What is Obligatory and Recommended Therein
الحسين بن سعيد عن صفوان عن ابن بكير عن زرارة قال قال أبو جعفر عليه السلام إنما يكره أن يجمع بين السورتين في الفريضة فاما النافلة فلا بأس
Al-Husayn ibn Sa‘id from Safwan from Ibn Bukayr from Zurarah who said:
Abu Ja‘far عليه السلام, peace be upon him, said: “It is only disliked to combine two Surahs in the obligatory prayer, but as for the ‘nafila’ (supererogatory prayer), there is no harm.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 77