Abu Hurairah reported,

Abu Bakr said, "By Allah, I will fight anyone who separates prayer from zakat, for zakat is the due owed on wealth. By Allah, if they withheld from me even a young goat that they used to hand over to the Messenger of Allah ﷺ, I would fight them for withholding it."Umar said, "By Allah, it was nothing other than that Allah had opened Abu Bakr's heart to the matter, and so I recognized that he was in the right."

فقال والله لأقاتلن من فرق بين الصلاة والزكاة فإن الزكاة حق المال والله لو منعوني عناقا كانوا يؤدونها إلى رسول الله ﷺ لقاتلتهم على منعها قال عمر رضي الله عنه فوالله ما هو إلا أن قد شرح الله صدر أبي بكر رضي الله عنه فعرفت أنه الحق