Hadith 506080
Chapter 17: Zakat - كتاب الزكاة
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ أَبَا بَكْرٍ الصِّدِّيقَ، قَالَ لَوْ مَنَعُونِي عِقَالاً لَجَاهَدْتُهُمْ عَلَيْهِ .
Yahya related to me from Malik that he had heard that Abu Bakr as-Siddiq said, "If they withhold even a hobbling cord I will fight them over it."
Reference Muwatta Malik 506080
USC-MSA web (English) reference : Book 17, Hadith 31