Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:20006 – Abū Zakariyyā b. Abū Isḥāq al-Muzakkī > Abū al-Ḥasan

[Machine] Everything in the Quran is either "or" or "or" and it is chosen. So, if it is not found, it is the first of the first.  

البيهقي:٢٠٠٠٦ – أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ الْمُزَكِّي أنبأ أَبُو الْحَسَنِ الطَّرَائِفِيُّ ثنا عُثْمَانُ بْنُ سَعِيدٍ ثنا عَبْدُ اللهِ بْنُ صَالِحٍ عَنْ مُعَاوِيَةَ بْنِ صَالِحٍ عَنْ عَلِيِّ بْنِ أَبِي طَلْحَةَ عَنِ ابْنِ عَبَّاسٍ ؓ فِي آيَةِ كَفَّارَةِ الْيَمِينِ قَالَ هُوَ بِالْخِيَارِ فِي هَؤُلَاءِ الثَّلَاثِ الْأُوَلِ فَإِنْ لَمْ يَجِدْ شَيْئًا مِنْ ذَلِكَ فَصِيَامُ ثَلَاثَةِ أَيَّامٍ مُتَتَابِعَاتٍ وَفِي رِوَايَةِ لَيْثِ بْنِ أَبِي سُلَيْمٍ عَنْ مُجَاهِدٍ عَنِ ابْنِ عَبَّاسٍ ؓ أَنَّهُ قَالَ

كُلُّ شَيْءٍ فِي الْقُرْآنِ أَوْ أَوْ فَهُوَ مُخَيَّرٌ فَإِذَا كَانَ لَمْ يَجِدْ فَهُوَ الْأَوَّلُ الْأَوَّلُ