(1) باب وُجُوبِ الزَّكَاةِ
This tradition has also been transmitted by Al Zuhri through a different chain of narrators. This version has "Abu Bakr said its due is the payment of zakat." He used the word "a rope of a Camel" (RU)
Reference (RU): Sunan Abi Dawud 1557 (RU)
In-book reference (RU): Book 9, Hadith 2 (RU)
English translation (RU): Book 9, Hadith 1552 (RU)