صَحِيحُ مُسْلِمٍ
Sahih Muslim 1149 d
The Book of Fasting
Making up fasts on behalf of the deceased
وَحَدَّثَنِيهِ إِسْحَاقُ بْنُ مَنْصُورٍ، أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنْ سُفْيَانَ، بِهَذَا الإِسْنَادِ وَقَالَ صَوْمُ شَهْرَيْنِ .
This hadith has been narrated on the authority of Sufyan with the same chain of transmitters in which it is said: " Fasting of two months."
Sahih Muslim, 1149 dSahihصحيح