The full length thobe was not worn by RasoolAllah ﷺ rather Kurta was worn with Izaar, and Sahaba wore Shalwaar, RasoolAllah ﷺ also purchased Shalwar and told us to wear them, especially for women. The knee-length Kurta is proven: It is narrated in the Sunan of Ibn Mājah (p. 264) from Ibn ʿAbbās (may Allah be pleased with him) who said, “The Prophet ﷺ used to wear a Kurtā, the length and sleeves of which were short”. The term short (Qaṣīr) should not be misunderstood for the modern day shirt. Rather, it is longer covering the ʿAwrah including the thighs and is shorter than the long Qamīṣ that would extend to between mid calf and the ankles. ʿAllāmah Munāwī (d. 1031/1622) states in Fayḍ al-Qadīr (5: 246) that the shorter Qamīṣ is less constraining and therefore easier for movement. Bayhaqī relates in Shuʿab al-Īmān, as mentioned in the commentary of Shamāʾil of Munāwī (1: 134), via Muslim al-Aʿwar who relates from Anas (may Allah be pleased with him) that he ﷺ had a cotton Kurtā, which was short in length and had short sleeves. The term short (Qaṣīr) should not be misunderstood for the modern day short sleeves between the shoulder and the elbow. Rather, it refers to the sleeve extending to the wrist which is ‘short’ compared to sleeves that extend to the fingers. See al-Ḥāwī of Suyūṭī (1: 84). It is worth noting that scholars have disliked wide sleeves and some have interpreted Qaṣīr as short in length and width. These two narrations indicate that the blessed Kurtā (Qamīṣ) of the Prophet ﷺ would not be very long. The maximum length of the Kurta/Qamis of RasoolAllah ﷺ was mid-calf, this was also worn as was the knee-length one.