Images(2). Claims(16). 1. A method for producing a quartz glass crucible for pulling up silicon single crystals, comprising the following steps: (a) forming a pre-molding by feeding powdered silicon dioxide into a mold, and by then forming it into a layer along an inner surface of the mold;escription. The present invention relates to a quartz glass crucible for use in pulling up silicon single crystals and to a method for producing the crucible. In further detail, it relates to a quartz glass crucible comprising a rotatable mold of an open-top type, and to a method for producing the mold.
The Taraweeh Prayer is a sunnah al-muakkada. The shortest is two rakats and the longest is twenty rakats. However, during the time of Umar b. Abdulaziz, the people of Medina observed the Taraweeh Prayer for thirty-six rakats. (Fathuâl Bari, v.4, p.220)
The number of rakats of the Taraweeh Prayer is based on the practice of Umar (may Allah be pleased with him). Umar led the Taraweeh Prayer in Masjid an-Nabawi for twenty rakats in the final times of his caliphate. After the period of Four Caliphs, no one objected to observing the Taraweeh prayer for twenty rakats. Scholars depend acted upon this hadith of the Prophet (pbuh) regarding this issue: â After me, follow my sunnah and the sunnah of the caliphs in the right pathâ (Tirmidhi, Ilm, 16; Ibn Hanbal, IV, 126).