Rubai reported that he read the letter of Umar bin Khattab, which stated:"There is nothing due on fewer than five camels. When the number reaches five, one sheep is due, up to nine. When it reaches ten, two sheep are due, up to fourteen. When it reaches fifteen, three sheep are due, up to nineteen. When it reaches twenty, four sheep are due, up to twenty-four. When it reaches twenty-five, a bint makhad (a one-year-old female camel) is due, up to thirty-five. If the number increases, a bint labun (a two-year-old female camel) is due, up to forty-five. If the number increases, a hiqqah (a three-year-old female camel) is due, up to sixty. If the number increases, two bint labun are due, up to ninety. If the number increases, two hiqqahs are due, up to one hundred and twenty. If the number increases beyond that, then for every fifty there is a hiqqah, and for every forty there is a bint labun.As for sheep, nothing is due on fewer than forty. When the number reaches forty, one sheep is due, up to one hundred and twenty. If the number increases, two sheep are due, up to two hundred. If it exceeds two hundred, three sheep are due, up to three hundred. If it exceeds three hundred, then for every additional hundred, one sheep is due."
أنه قرأ كتاب عمر بن الخطاب: أنه ليس فيما دون خمسة من الإبل شيء، وإذا بلغت خمسا ففيها شاة إلى تسع، فإذا كانت عشرا فشاتان إلى أربع عشرة، فإذا بلغت خمس عشرة ففيها ثلاث إلى تسع عشرة، فإذا بلغت العشرين فأربع وإلى أربع وعشرين، فإذا بلغت خمسا وعشرين ففيها بنت مخاض إلى خمس وثلاثين، فإذا زادت ففيها ابنة لبون إلى خمس وأربعين، فإذا زادت ففيها حقة إلى الستين، فإذا زادت ففيها ابنتا لبون إلى التسعين فإذا زادت ففيها حقتان إلى العشرين ومائة، فإذا زادت ففي كل خمسين حقة، وفي كل أربعين ابنة لبون، وليس في الغنم شيء فيما دون الأربعين، فإذا بلغت الأربعين ففيها شاة إلى العشرين ومائة فإذا زادت فشاتان إلى المائتين، فإن زادت على المائتين فثلاث شياه إلى الثلاث مائة، فإذا زادت على الثلاث مائة، ففي كل مائة شاة.
Abu Yaala related it in his Musnad (125) from Abu Rabi (that is, Zuhrani), who said, Hammad (that is, Ibn Zayd) narrated to us, saying, I heard Ayub, Abdul-Rahman, and Ubaydullah bin Umar narrating from Nafi that he read the letter of Umar bin Khattab, and he mentioned it.This is a wijadah narration, which is one of the recognized modes of transmission among the scholars of hadith. Its narrators are trustworthy, as Haythami said in Majma (3/74), and it resembles the letter of Abu Bakr to Anas mentioned earlier.