24.67 There is Khumus on Rikaz
٢٤۔٦٧ باب فِي الرِّكَازِ الْخُمُسُ
[Machine] And Malik and Ibn Idris Al-Rikaz said that burying the pre-Islamic remnants can be done with a small or large amount, and minerals are not considered Rikaz. The Prophet Muhammad ﷺ said about minerals: "They are a type of Jibar, and Rikaz includes Khums (one-fifth)." Umar ibn Abd al-Aziz took Khums from every two hundred and five items of minerals. Al-Hasan said that if the minerals are found in a land of war, then Khums should be given, and if they are found in a land of peace, then Zakat should be given. If you find something that was left by the enemy, report it, and if it is from the enemy, give Khums. Some people say that minerals are called Rikaz because it is said "Arkaza al-Ma'din" when something comes out of it. It was said to them that it can also be said to someone who is given something or gains a lot of profit or has an abundant harvest, "Arkazta." Then he contradicted himself and said that it is fine to keep it and not pay Khums on it.
وَقَالَ مَالِكٌ وَابْنُ إِدْرِيسَ الرِّكَازُ دِفْنُ الْجَاهِلِيَّةِ، فِي قَلِيلِهِ وَكَثِيرِهِ الْخُمُسُ. وَلَيْسَ الْمَعْدِنُ بِرِكَازٍ، وَقَدْ قَالَ النَّبِيُّ ﷺ فِي الْمَعْدِنِ: «جُبَارٌ، وَفِي الرِّكَازِ الْخُمُسُ». وَأَخَذَ عُمَرُ بْنُ عَبْدِ الْعَزِيزِ مِنَ الْمَعَادِنِ مِنْ كُلِّ مِائَتَيْنِ خَمْسَةً. وَقَالَ الْحَسَنُ مَا كَانَ مِنْ رِكَازٍ فِي أَرْضِ الْحَرْبِ فَفِيهِ الْخُمُسُ، وَمَا كَانَ مِنْ أَرْضِ السِّلْمِ فَفِيهِ الزَّكَاةُ، وَإِنْ وَجَدْتَ اللُّقَطَةَ فِي أَرْضِ الْعَدُوِّ فَعَرِّفْهَا، وَإِنْ كَانَتْ مِنَ الْعَدُوِّ فَفِيهَا الْخُمُسُ. وَقَالَ بَعْضُ النَّاسِ الْمَعْدِنُ رِكَازٌ مِثْلُ دِفْنِ الْجَاهِلِيَّةِ لأَنَّهُ يُقَالُ أَرْكَزَ الْمَعْدِنُ. إِذَا خَرَجَ مِنْهُ شَيْءٌ. قِيلَ لَهُ قَدْ يُقَالُ لِمَنْ وُهِبَ لَهُ شَيْءٌ، أَوْ رَبِحَ رِبْحًا كَثِيرًا، أَوْ كَثُرَ ثَمَرُهُ أَرْكَزْتَ. ثُمَّ نَاقَضَ وَقَالَ لاَ بَأْسَ أَنْ يَكْتُمَهُ فَلاَ يُؤَدِّيَ الْخُمُسَ.