That it was proper to wear special garments (or at least to rearrange one's weekday clothes) on the Jewish sabbath was recognized in the Talmud, and Mahommedans, after discussing at length the most suitable raiment for prayer, favoured the use of a single simple garment (Bukhari, viii.).
He was a scholar of the traditionalist Bukhari, and in his search for traditions travelled through Khorasan, Irak and Hejaz.
Bukhari [[[Mahommed Ahmed Ibn Seyyid Abdullah|Mahommed ibn]] Isma`il al-Bukhari] (810-872), Arabic author of the most generally accepted collection of traditions (hadith) from Mahomet, was born at Bokhara (Bukhdra), of an Iranian family, in A.H.
Like al-Bukhari (q.v.), of whom he was a close and faithful friend, he gave himself to the collecting, sifting and arranging of traditions, travelling for the purpose as far as Egypt.
His great collection of traditions is second in popularity only to that of al-Bukhari, and is commonly regarded as more accurate and reliable in details, especially names.
The brilliant days are past when the universities of Damascus, Bagdad, Nishapur, Cairo, Kairawan, Seville, Cordova, were thronged by thousands of students of theology, when a professor had often hundreds or even, like Bukhari, thousands of hearers, and when vast estates in the hands of the clergy fed both masters and scholars.