Barang siapa bernadzar untuk taat kepada Allah, hendaklah ia menunaikannya. Barang siapa bernadzar untuk maksiat, janganlah ia menunaikannya
Imam Ahmad : 18395حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ إِسْمَاعِيلَ قَالَ سَمِعْتُ قَيْسًا يُحَدِّثُ عَنْ جَرِيرٍ قَالَ بَايَعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَلَى إِقَامِ الصَّلَاةِ وَإِيتَاءِ الزَّكَاةِ وَالنُّصْحِ لِكُلِّ مُسْلِمٍ
Narrated to us [Muhammad bin Ja'far] Narrated to us [Syu'bah] from [Isma'il] he said, I heard [Qais] narrating from [Jarir] he said: I pledged allegiance to the Messenger of Allah Peace be upon him to always be ready to establish prayer, pay zakat, and be sincere to every Muslim.