Hadith 9

Sahih Bukhari

Book 24: Obligatory Charity Tax (Zakat)

Chapter 4

A property from which the Zakat is paid is not Al-Kanz (hoarded-money)

باب مَا أُدِّيَ زَكَاتُهُ فَلَيْسَ بِكَنْزٍ

According to the statement of the Prophet ﷺ: “There is no Zakat on property mounting to less than five Uqiya (of silver)”—(one Uqiya equals 128 grams.) ​​
لِقَوْلِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَيْسَ فِيمَا دُونَ خَمْسَةِ أَوَاقٍ صَدَقَةٌ».
Sahih al-Bukhari 1404
وَقَالَ أَحْمَدُ بْنُ شَبِيبِ بْنِ سَعِيدٍ حَدَّثَنَا أَبِي، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ، عَنْ خَالِدِ بْنِ أَسْلَمَ، قَالَ خَرَجْنَا مَعَ عَبْدِ اللَّهِ بْنِ عُمَرَ ـ رضى الله عنهما ـ فَقَالَ أَعْرَابِيٌّ أَخْبِرْنِي قَوْلَ اللَّهِ، ‏{‏وَالَّذِينَ يَكْنِزُونَ الذَّهَبَ وَالْفِضَّةَ وَلاَ يُنْفِقُونَهَا فِي سَبِيلِ اللَّهِ‏}‏ قَالَ ابْنُ عُمَرَ ـ رضى الله عنهما ـ مَنْ كَنَزَهَا فَلَمْ يُؤَدِّ زَكَاتَهَا فَوَيْلٌ لَهُ، إِنَّمَا كَانَ هَذَا قَبْلَ أَنْ تُنْزَلَ الزَّكَاةُ فَلَمَّا أُنْزِلَتْ جَعَلَهَا اللَّهُ طُهْرًا لِلأَمْوَالِ‏.‏
Khalid bin Aslam:

We went out with 'Abdullah bin 'Umar and a bedouin said (to 'Abdullah), "Tell me about Allah's saying: "And those who hoard up gold and silver (Al-Kanz - money, gold, silver etc., the Zakat of which has not been paid) and spend it not in the Way of Allah (V.9:34)." Ibn 'Umar said, "Whoever hoarded them and did not pay the Zakat thereof, then woe to him. But these holy Verses were revealed before the Verses of Zakat. So when the Verses of Zakat were revealed, Allah made Zakat a purifier of the property."
Quran References:
Surah 9:34