Q: I have diabetes and need to check my blood sugar levels several times a day, this involves pricking my finger in order to extract blood to be tested. Do I need to constantly repeat my wudu? As this involves a great deal of hardship can a take a dispensation from the Shafi’i madhab?
A: In the name of Allah, The Compassionate, The Merciful.
In regards to the blood invalidating wudu there are a number of things to take into consideration. The following is taken from a treatise by Al-Allamah Ibn Abidin with slight changes:
1. That which doesn’t have the power to flow is not impure whether it is from his own doing like piercing with a needle etc. or not, it doesn’t invalidate wudu whatsoever.
2. If a wound/piercing occurs and the blood doesn’t flow down from the tip of the wound but it rises and become larger than the tip of the wound it doesn’t invalidate wudu.
3. Flowing that invalidates covers that which flows on it’s own and that which flows by squeezing (but if was left without squeezing it would not have flowed). There is difference of opinion regarding the second situation. The author of Al-Hidayah choose the stance that it doesn’t invalidate. Most of the other ulema chose the stance that it does and it is the sounder and more cautious opinion and the fatwa stance.
(Majmu’ah Rasa’il Ibn Abidin: Al-Fawa’id al-Mukhassasah bi Ahkam Kay al-Himmisah)
Bear in mind that because of the high rank of the author of Al-Hidayah that the ulema permit following his opinion in a time of undue hardship and necessity even though it is a weaker position. A similar situation occured to Imam Ibn Abidin where he took the weaker stance and repeated his prayers later on out of precaution.