Chapter on Oaths, Vows, and Expiations
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 38
وَ رَوَى حَمَّادٌ عَنِ اَلْحَلَبِيِّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: "أَرَى أَنْ لاَ يُحْلَفَ إِلاَّ بِاللَّهِ وَ أَمَّا قَوْلُ اَلرَّجُلِ لاَ بَلِ شَانِئِكَ فَإِنَّهُ مِنْ قَوْلِ اَلْجَاهِلِيَّةِ وَ لَوْ حَلَفَ اَلنَّاسُ بِهَذَا أَوْ شِبْهِهِ تُرِكَ أَنْ يُحْلَفَ بِاللَّهِ وَ أَمَّا قَوْلُ اَلرَّجُلِ يَا هَنَاهْ يَا هَنَاهْ فَإِنَّمَا ذَلِكَ طَلَبُ اَلاِسْمِ وَ لاَ أَرَى بِهِ بَأْساً وَ أَمَّا لَعَمْرُ اَللَّهِ وَ اَيْمُ اَللَّهِ فَإِنَّمَا هُوَ بِاللَّهِ ".
Hammad narrated from al-Halabi, from Abu Abdillah عليه السلام, who said: "I believe that one should only swear by Allah سبحانه وتعالى. As for a man's saying, 'No, by your enemy,' this is from the sayings of Jahiliyyah (the pre-Islamic era of ignorance). If people were to swear by this or similar expressions, swearing by Allah سبحانه وتعالى would be abandoned. As for a man's saying, 'Ya Hanah, Ya Hanah' (O so-and-so), it is merely calling a name, and I see no harm in it. And as for saying, 'By the life of Allah سبحانه وتعالى' (La 'amr Allah سبحانه وتعالى) and 'By the oath of Allah سبحانه وتعالى' (Aym Allah سبحانه وتعالى), these are indeed swearing by Allah سبحانه وتعالى."
- Ṣaḥīḥ al-Faqīh