Sura al-Baqara 2:189

يَسْـَٔلُونَكَ عَنِ ٱلْأَهِلَّةِ قُلْ هِىَ مَوَٰقِيتُ لِلنَّاسِ وَٱلْحَجِّ وَلَيْسَ ٱلْبِرُّ بِأَن تَأْتُوا۟ ٱلْبُيُوتَ مِن ظُهُورِهَا وَلَٰكِنَّ ٱلْبِرَّ مَنِ ٱتَّقَىٰ وَأْتُوا۟ ٱلْبُيُوتَ مِنْ أَبْوَٰبِهَا وَٱتَّقُوا۟ ٱللَّـهَ لَعَلَّكُمْ تُفْلِحُونَ

yasʾalūnaka ʿani l-ahillati qul hiya mawāqītu lil-nāsi wa-l-ḥajji walaysa l-birru bi-an taʾtū l-buyūta min ẓuhūrihā wa-lākinna l-birra mani ittaqā wa-ʾtū l-buyūta min abwābihā wa-ittaqū allāha la-ʿallakum tufliḥūna

They ask thee concerning the New Moons. Say: They are but signs to mark fixed periods of time in (the affairs of) men, and for Pilgrimage. It is no virtue if ye enter your houses from the back: It is virtue if ye fear Allah. Enter houses through the proper doors: And fear Allah: That ye may prosper.