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bayhaqi:9772Abū Saʿīd b. Abū ʿAmr > Abū al-ʿAbbās al-Aṣam > al-Rabīʿ > al-Shāfiʿī > Akrah > Yuqāl Lilmuḥarram Ṣafar And Lakin Yuqāl Lah al-Muḥarram Waʾinnamā Kariht > Yuqāl Lilmuḥarram Ṣafar from Qibal

[Machine] That the people of ignorance used to count and say "zero" for the month of Al-Muharram and "zero" for the month of Safar. They would also invert and perform a pilgrimage in one year during a certain month, and in another year during a different month. They would say, "If we make a mistake in observing the sacredness of a certain place in one year, we will compensate for it in another year." So Allah, may He be glorified and exalted, revealed the verse: "The postponing (of a Sacred Month) is Indeed an Addition to Unbelief" [Surah At-Tawbah 9:37]. The Messenger of Allah ﷺ said, "Indeed, time has turned around just as it was on the day when Allah created the heavens and the earth." Therefore, no month should be inverted, and the Messenger of Allah ﷺ named it Al-Muharram.  

البيهقي:٩٧٧٢أَخْبَرَنَا أَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو ثنا أَبُو الْعَبَّاسِ الْأَصَمُّ أنبأ الرَّبِيعُ أنبأ الشَّافِعِيُّ قَالَ أَكْرَهُ أَنْ يُقَالَ لِلْمُحَرَّمِ صَفَرٌ وَلَكِنْ يُقَالُ لَهُ الْمُحَرَّمُ وَإِنَّمَا كَرِهْتُ أَنْ يُقَالَ لِلْمُحَرَّمِ صَفَرٌ مِنْ قِبَلِ

أَنَّ أَهْلَ الْجَاهِلِيَّةِ كَانُوا يَعْدُونَ فَيَقُولُونَ صَفَرَانِ لِلْمُحَرَّمِ وَصَفَرٍ وَيَنْسَئُونَ فَيَحُجُّونَ عَامًا فِي شَهْرٍ وَعَامًا فِي غَيْرِهِ وَيَقُولُونَ إِنْ أَخْطَأْنَا مَوْضِعَ الْحُرُمِ فِي عَامٍ أَصَبْنَاهُ فِي غَيْرِهِ فَأَنْزَلَ اللهُ جَلَّ ثَنَاؤُهُ {إِنَّمَا النَّسِيءُ زِيَادَةٌ فِي الْكُفْرِ} [التوبة 37] الْآيَةَ وَقَالَ رَسُولُ اللهِ ﷺ إِنَّ الزَّمَانَ قَدِ اسْتَدَارَ كَهَيْئَتِهِ يَوْمَ خَلَقَ اللهُ السَّمَاوَاتِ وَالْأَرْضَ فَلَا شَهْرَ يُنْسَأُ وَسَمَّاهُ رَسُولُ اللهِ ﷺ الْمُحَرَّمَ