عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُ مَرْفُوعًا: يَقْطَعُ الصَّلَاةَ الْكَلْبُ وَالْمَرْأَةُ الْحَائِضُ
It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: A dog and a menstruating woman invalidate the prayer.