عَنْ سَهْلِ بْنِ مُعَاذِ بْنِ أَنَسٍ الْجُهَنِيِّ عَنْ أَبِيهِ رَضِيَ اللَّهُ عَنْهُ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَنَّهُ نَهَى عَنِ الْحَبْوَةِ يَوْمَ الْجُمُعَةِ وَالْإِمَامُ يَخْطُبُ
It is narrated from Sayyiduna Mu'adh bin Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade sitting with knees drawn up (habwah) on Friday while the Imam is delivering the sermon.