The Book of Prayer
Bulugh al-Maram #279
كتاب الصلاة
وَفِي رِوَايَةٍ: «فَإِنَّ مَعَهُ اَلْقَرِينَ»
In another narration:
“for there is a Satan with him.”
وَفِي رِوَايَةٍ : "فَإِنَّ مَعَهُ اَلْقَرِينَ"
"for there is a Satan with him."
— Bulugh al-Maram, Hadith 279