Al-Kāfi
Hadith 88818- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ مُحَمَّدِ بْنِ الْحَسَنِ بْنِ شَمُّونٍ عَنْ عَبْدِ اللهِ بْنِ عَبْدِ الرَّحْمَنِ الأصَمِّ عَنْ مِسْمَعِ بْنِ عَبْدِ الْمَلِكِ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) أَنَّ أَمِيرَ الْمُؤْمِنِينَ (عَلَيْهِ السَّلام) سُئِلَ عَنْ رَجُلٍ نَذَرَ وَلَمْ يُسَمِّ شَيْئاً قَالَ إِنْ شَاءَ صَلَّى رَكْعَتَيْنِ وَإِنْ شَاءَ صَامَ يَوْماً وَإِنْ شَاءَ تَصَدَّقَ بِرَغِيفٍ.
18. A number of our people have narrated from Sahl ibn Ziyad from Muhammad ibn al-Hassan Shammun from ‘ Abd Allah ibn ‘Abd al- Rahman al-Asamm from Misma‘ ibn ‘Abd al-Malik who has narrated the following: “Abu ‘Abd Allah (a.s.), has said that ’Amir al-Mu’minin, Ali (a.s.), was asked about a man who makes a vow and commitment without specifying anything, has said, ‘If he wants he can perform two Rak‘at Salat (prayer) or fast for one day or give one loaf of bread for charity.’”