What was the first sword the Prophet (peace be upon him) owned?

Al-Ayni mentioned that the swords of the Prophet, peace and blessings be upon him, were ten. Seven of them were mentioned in poetic verses: Miḥdham, Ḥatf, Dhū al-Faqār, Aḍb, Rasūb, Qalī, and Battār. The other three are: Ma'thūr, which he inherited from his father and was the first sword he owned; Ṣamṣāmah, the sword of Amr ibn Madī Karib; and al-Qaḍīb, which was the first sword he ever wore. The inquirer was advised to focus on the Prophet's biography, his worship, and the rulings of his Sharia, instead of wasting time on matters of little benefit, as the website is dedicated to jurisprudential fatwas and Sharia consultations.