I heard the Prophet of Allah ﷺ say, "For every forty grazing camels, one she-camel that has entered its third year is due. The camels are not to be separated from their reckoning. Whoever gives it seeking reward will be rewarded for it, but whoever withholds it, we will take it from him along with half of his camels, as a binding decree from the decrees of our Lord, Mighty and Majestic. None of it is lawful for the family of Muhammad."
حدثنا إسماعيل ابن علية
سمعت نبي الله ﷺ يقول في كل إبل سائمة في كل أربعين ابنة لبون لا تفرق إبل عن حسابها من أعطاها مؤتجرا فله أجرها ومن منعها فإنا آخذوها منه وشطر إبله عزمة من عزمات ربنا جل وعز لا يحل لآل محمد منها شيء