Muwatta Imam Malik Book of Hajj, Hadith 187

Yahya related to me from Malik that he had heard that the Messenger of Allah ﷺ said once at Mina, "This place (where I have just sacrificed), and the whole of Mina, is a place of sacrifice," and he said once during umra, "This place of sacrifice" meaning Marwa, "and all the pathways of Makka and its roads are a place of sacrifice."

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ بِمِنًى " هَذَا الْمَنْحَرُ وَكُلُّ مِنًى مَنْحَرٌ " . وَقَالَ فِي الْعُمْرَةِ " هَذَا الْمَنْحَرُ - يَعْنِي الْمَرْوَةَ - وَكُلُّ فِجَاجِ مَكَّةَ وَطُرُقِهَا مَنْحَرٌ " .