Allah—Mighty and Majestic—said: [‏إِنَّمَا الصَّدَقَاتُ لِلْفُقَرَاءِ وَالْمَسَاكِينِ وَالْعَامِلِينَ عَلَيْهَا‏] the verse [‏التَّوْبَةِ‏:‏ 60‏]

Sayyiduna Ibn al-Sa’idi al-Maliki (may Allah be pleased with him) narrates that Sayyiduna Umar (may Allah be pleased with him) appointed me as a collector of Zakat. When I finished collecting Zakat and handed over the wealth to him, he ordered that I be given wages. I submitted,“Indeed, I did this work for the pleasure of Allah, and my reward is with Allah Almighty alone.”So Sayyiduna Umar (may Allah be pleased with him) said,“Take what I am giving you, because I performed this same task during the blessed era of the Messenger of Allah (peace and blessings be upon him), and he gave me wages. I also expressed myself as you did. Upon this, Allah’s Messenger (peace and blessings be upon him) said to me: ‘When something comes to you without you asking for it, then eat it and give charity from it.’”Imam Abu Bakr (may Allah have mercy on him) says that in my opinion, the Ibn al-Sa’idi al-Maliki referred to here is Abdullah bin Sa’d Abi Sarh.