مشكوة المصابيح
Mishkat al-Masabih
كتاب الإيمان والنذور
The Book of Oaths and Vows
(يَجِبُ إِتْمَامُ نَذْرِ الْمَيِّتِ الْجَائِزِ)
(The permissible vow of the deceased must be fulfilled)
Hadith 3433
وَعَنِ ابْنِ عَبَّاسٍ: أَنَّ سَعْدَ بن عبَادَة رَضِي الله عَنْهُم اسْتَفْتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي نَذْرٍ كَانَ عَلَى أُمِّهِ فَتُوُفِّيَتْ قَبْلَ أَنْ تَقْضِيَهُ فَأَفْتَاهُ أَنْ يَقْضِيَهُ عَنْهَا
Ibn ‘Abbas told that Sa'd b. ‘Ubada asked the Prophet for a decision about a vow taken by his mother who had died before fulfilling it, and that he gave decision that he should fulfil it on her behalf. (Bukhari and Muslim.)
