Al-Kāfi - The Book of Oaths, Vows and Expiations

Al-Kāfi - The Book of Oaths, Vows and Expiations Chapter: The Intention for an Oath َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َاعِيلَ بْنِ سَعْدٍ الأشْعَرِيِّ عَنْ أَبِي الْحَسَنِ الرِّضَا (عَلَيْهِ السَّلا٠) قَالَ سَأَلْتُهُ عَنْ رَجُلٍ حَلَفَ وَضَ٠ِيرُهُ عَلَى غَيْرِ ٠َا حَلَفَ قَالَ الْيَ٠ِينُ عَلَى الضَّ٠2.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ’Isma‘il ibn Sa‘d al-Ash‘ariy who has narrated the following: “I once asked al-Rida’ (a.s.), about the case of a man who swears but his mind is on something other than what he has taken oath for. He (the Imam) said, ‘The oath is for that which is in one’s mind.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (4/322))