Section One: The Usurious Categories.

The First Topic: The Explicitly Mentioned Usurious Categories.
The explicitly mentioned usurious categories are: gold, silver, wheat, barley, dates, and salt.
The Evidences:
Firstly: From the Sunnah
(1) It was narrated by ‘Ubādah ibn aṣ-Ṣāmit رضي الله عنه that the Messenger of Allah صلى الله عليه وسلم said: "Gold for gold, silver for silver, wheat for wheat, barley for barley, dates for dates, and salt for salt—like for like, equal for equal, hand to hand. If these types differ, then sell as you wish, provided it is hand to hand." [30] - Narrated by Muslim(1583).
(2) Abū Sa‘īd al-Khudrī رضي الله عنه narrated that the Messenger of Almighty Allah صلى الله عليه وسلم said: "Do not sell gold for gold except like for like, and do not allow any surplus. Do not sell silver for silver except like for like, and do not allow any surplus. And do not sell something absent for something present." [31] - Narrated by al-Bukhari(2177) and Muslim(1584).
(3) It was narrated by Abū Hurayrah  رضي الله عنه that the Messenger of Almighty Allah  صلى الله عليه وسلم said: "Gold for gold by weight, like for like; silver for silver by weight, like for like. Whoever adds or seeks addition has committed usury (Riba)." [32] -Narrated by Muslim(1588).
(4) It was narrated by ‘Abd al-Raḥmān ibn Abī Bakrah that Abū Bakrah رضي الله عنه said: The Messenger of Allah صلى الله عليه وسلم said: "Do not sell gold for gold except equal for equal, and do not sell silver for silver except equal for equal. But sell gold for silver and silver for gold as you wish." [33] - Narrated by al-Bukhari(2175) and the wording is his And Muslim(1590).
(5) On the authority of ʿUthmān ibn ʿAffān رضي الله عنه that the Messenger of Allah صلى الله عليه وسلم said: "Do not sell one dinar for two dinars, nor one dirham for two dirhams." [34] - Narrated by Muslim(1585).
Secondly: Consensus (Ijma')
The consensus on this matter has been transmitted by: Al-Māwardī, [35] - Al-Māwardī said: "As for the items explicitly mentioned regarding Riba usury, there are six things that have been stated in the Sunnah and upon which the Muslims have reached consensus: they are gold, silver, wheat, barley, dates, and salt." "Al-Ḥāwī Al-Kabīr"(5/81). Al-Baghawī, [36] - Al-Baghawī, while mentioning the Hadīth of ʿUbādah ibn aṣ-Ṣāmit, said: "The scholars have unanimously agreed that Riba(usury) applies to these six items that are explicitly mentioned in the Hadīth."   "Sharḥ as-Sunnah"(8/75). Ibn Qudāmah, [37] - Ibn Qudāmah said: "These specified items, riba usury is established in them by both the textual evidence naṣṣ and the consensus (ijmāʿ). The scholars have differed concerning other items besides these."  "Al-Mughnī"(4/4). and Al-ʿAynī. [38] - Al-ʿAynī said: "The Muslims have unanimously agreed on the prohibition of Riba (usury) in these four items mentioned in the Hadīth of ʿUmar  رضي الله عنه, along with two additional items: silver and salt. Thus, these six items are agreed upon by consensus." " ʿUmdat al-Qārī"(11/252).
The Second Topic: What is Analogous to the Riba-Related Items Mentioned in the Texts
Items analogous to the six categories of Riba (usury) -related commodities mentioned in the texts fall under the same ruling if the " 'illah"(cause or reason) of the prohibition of Riba (Usury) is present in them. This is in agreement with the four major schools of Islamic jurisprudence: [39] - This is based on the determination of the cause ('illah) of Riba (usury) in each school of thought mathhab. the Ḥanafīs, [40] -"Al-Mabsūṭ" by As-Sarakhsī (12/98). the Mālikīs, [41] -"Al-Kāfī fī Fiqh Ahl al-Madīnah" by Ibn ʿAbd al-Barr(2/645) and  "Ar-Risālah" by Ibn Abī Zayd al-Qayrawānī, p. 102. the Shāfiʿīs, [42] -"Fatḥ al-ʿAziz" by Ar-Rāfiʿī (8/162) and " Al-Majmūʿ" by An-Nawawī (9/392). and also the Ḥanbalīs. [43] - "Al-Mubdiʿ" by Burhān ad-Dīn Ibn Mufliḥ ( 4/126); Refer to: "Al-Mughnī" by Ibn Qudāmah(4/6) and  "Sharḥ al-Zarkashī ʿalā Mukhtaṣar al-Khirqī"(3/413). This is because the ruling of Riba (Usury) applies due to certain underlying causes found in these items, and the ruling extends to other items that share the same cause ('illah , علة). Additionally, analogy (qiyā, قياس ) is considered a valid Islamic legal evidence (dalīl sharʿī). [44] - "Al-Mughnī" by Ibn Qudāmah(4/6); Refer to:" Al-Mabsūṭ" by As-Sarakhsī(12/98) ; "Fatḥ al-ʿAziz" by Ar-Rāfiʿī (8/162); "Sharḥ al-Zarkashī ʿalā Mukhtaṣar al-Khirqī"(3/413).