Ṣufr—with the ṣād pronounced with a ḍamma (a kasra is also acceptable)—designates copper. A tūr, spelled with the feminine tā, is a vessel much like a cup.

776 – Jābir (may Allah be pleased with him) reported: The Messenger of Allah (peace and blessings be upon him) entered the house of a man from the Anṣār, accompanied by another Companion. He said, “If you have water that spent the night in a shinn, give it to us; otherwise we shall lap the water directly.” Al-Bukhārī narrated this. (A shinn is a waterskin.)

777 – Hudhayfah (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) forbade us from wearing silk and dibāj (brocade) and from drinking out of gold or silver vessels. He added, “They belong to them in this world, but they will be yours in the Hereafter.” Agreed upon.

778 – Umm Salamah (may Allah be pleased with her) reported that the Messenger of Allah (peace and blessings be upon him) said, “Whoever drinks from a silver vessel is only gulping down in his stomach the fire of Hell.” Agreed upon. In another narration collected by Muslim: “Whoever eats or drinks from a vessel of silver or gold…”