Al Baqarah, 189 Ayah
2:189
۞ يَسۡـَٔلُونَكَ عَنِ ٱلۡأَهِلَّةِۖ قُلۡ هِيَ مَوَٰقِيتُ لِلنَّاسِ وَٱلۡحَجِّۗ وَلَيۡسَ ٱلۡبِرُّ بِأَن تَأۡتُواْ ٱلۡبُيُوتَ مِن ظُهُورِهَا وَلَٰكِنَّ ٱلۡبِرَّ مَنِ ٱتَّقَىٰۗ وَأۡتُواْ ٱلۡبُيُوتَ مِنۡ أَبۡوَٰبِهَاۚ وَٱتَّقُواْ ٱللَّهَ لَعَلَّكُمۡ تُفۡلِحُونَ ١٨٩
Yas'alūnaka `Ani Al-'Ahillati ۖ Qul Hiya Mawāqītu Lilnnāsi Wa Al-Ĥajji ۗ Wa Laysa Al-Birru Bi'an Ta'tū Al-Buyūta Min Žuhūrihā Wa Lakinna Al-Birra Mani Attaqá ۗ Wa 'Tū Al-Buyūta Min 'Abwābihā ۚ Wa Attaqū Al-Laha La`allakum Tufliĥūna
They ask you, [O Muhammad], about the new moons. Say, "They are measurements of time for the people and for Hajj." And it is not righteousness to enter houses from the back, but righteousness is [in] one who fears Allah. And enter houses from their doors. And fear Allah that you may succeed.