حَدَّثَنَا عُثْمَانُ، قَالَ: حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ هِلاَلِ بْنِ يَسَافٍ، عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ قَالَ: إِذَا تَثَاءَبَ فَلْيَضَعْ يَدَهُ عَلَى فِيهِ، فَإِنَّمَا هُوَ مِنَ الشَّيْطَانِ.
It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them) that he said: When any of you yawns, he should place his hand over his mouth, for it is from Satan.