سنن أبي داود

Dhu Mikhbar al-Habashi, who used to serve the Prophet (ﷺ), reported a version of the previous tradition. The Prophet (ﷺ) performed ablution in such a way that there is no mud on the earth. He then commanded Bilal (to call for prayer). He called for prayer. The Prophet (ﷺ) stood and offered two rak'ahs of prayer unhurriedly.

This is narrated by Hajjaj on the authority of Yazid b. Sulaih from Dhu Mikhbar from a person of al-Habashah (Ethiopia). 'Ubaid (a narrator) said: Yazid b. Salih (instead of Yazid b. Sulaih).