Musannaf Ibn Abi Shaybah 2196 — The muezzin turning around during

Ibn Sirin said: When the muezzin gives the adhan, he should face the qiblah. He disliked that the muezzin should turn around in the minaret. Al-Hasan used to say: The muezzin should face the qiblah; when he says 'Hayya 'ala al-salah' (come to prayer) he should turn, and when he is about to say 'Allahu akbar' he should face the qiblah again.