"The Messenger of Allah ﷺ narrated about the Night of Isra', saying that he did not pass an assembly of angels except that they ordered him: 'Order cupping among your Ummah."
حَدَّثَ رَسُولُ اللَّهِ ﷺ عَنْ لَيْلَةَ أُسْرِيَ بِهِ أَنَّهُ لَمْ يَمُرَّ عَلَى مَلإٍ مِنَ الْمَلاَئِكَةِ إِلاَّ أَمَرُوهُ أَنْ مُرْ أُمَّتَكَ بِالْحِجَامَةِ