of the nisab, a minimum monetary value. However, Islamic scholars have disagreed on this issue. For example, Abu Hanifa did not regard the nisab limit to be a pre-requisite for zakat, in the case of land crops, fruits and minerals. Other differences between Islamic scholars on zakat and nisab are acknowledged as follows by Yusuf al-Qaradawi, Unlike prayers, we observe that even the ratio, the exemption, the kinds of wealth that are zakatable are subject to differences among scholars. Such differences have serious implications for Muslims at large when it comes to their application of the Islamic obligation of zakat. For example, some scholars consider the wealth of children and insane individuals zakatable, others don't. Some scholars consider all agricultural products zakatable, others restrict zakat to specific kinds only. Some consider debts zakatable, others don't. Similar differences exist for business assets and women's jewelry. Some require certain minimum (nisab) for zakatability, some don't. etc. The same kind of differences also exist about the disbursement of zakat. – Shiekh Mahmud Shaltut Failure to pay The consequence of failure to pay zakat has been a subject of extensive legal debate in traditional Islamic jurisprudence, particularly when a Muslim is willing to pay zakat but refuses to pay it to a certain group or the state. According to classical jurists, if the collector is unjust in the collection of zakat but just in its distribution, the concealment of property from him is allowed. If, on the other hand, the collector is just in the collection but unjust in the distribution, the concealment of property from him is an obligation (wajib). Furthermore, if the zakat is concealed from a just collector because the property owner wanted to pay his zakat to the poor himself, they held that he should not be punished for it. If collection of zakat by force was not possible, use of military force to extract it was seen as justified, as was done by Abu Bakr during the Ridda Wars, on the argument that refusing to submit to just orders is a form of treason. However, Abu Hanifa, the founder of the Hanafi school, disapproved of fighting when the property owners undertake to distribute the zakat to the poor themselves. Some classical jurists held the view that any Muslim who consciously refuses to pay zakat is an apostate, since the failure to believe that it is a religious duty (fard)