What is the ruling on continuing prayer upon seeing a small drop of blood on one's garment during prayer?

Blood is considered impure by the majority of scholars. However, if someone prays and there is a small spot of blood on their garment, they should complete their prayer, and they are not required to purify their clothes. This is because a small amount of impurity is excused, just as a small amount of blood, pus, or discharge is excused. This is based on what was narrated by Aisha, may Allah be pleased with her, who said: "None of us had more than one garment, in which she would menstruate. If any of her blood got on it, she would moisten it with her saliva and then scrape it off with her fingernail." This indicates that it is excused due to the hardship and difficulty involved.