ibn Aḥmad ibn Ibrāhīm al-Shīrāzī, later known as al-Baghdādī, a Sufi (1) and the compiler of Al-Arbaʿīn al-Baladiyya.
He was born in 529 AH in Baghdad.
His father arranged for him to hear ḥadith from Abū al-Qāsim ibn al-Samarqandī, Yaḥyā ibn ʿAlī al-Ṭarrāḥ, Abū al-Ḥasan ibn ʿAbd al-Salām, and Abū Saʿd ibn al-Baghdādī the ḥāfiẓ.
Later he pursued study on his own, receiving ḥadith from ʿAbd al-Malik al-Karūkhī and Ibn Nāṣir; in Kūfa from Abū al-Ḥasan ibn Ghabra; in Kirmān from Abū al-Waqt al-Sijzī; in Basra from ʿAbd Allāh ibn Salīkh (2); in Wāsiṭ from Aḥmad ibn Bakhtiyār al-Mandāʾī; in Herat from the long-lived ʿAbd al-Jalīl ibn Abī Saʿd; in Nīshāpūr from Muḥammad ibn ʿAlī al-Ṭūsī; in Balkh from Abū Shujāʿ al-Bisṭāmī; in Isfahan from Ismāʿīl al-Ḥammāmī; in Hamadhān from Naṣr al-Barmakī; and in Damascus from Abū al-Makārim ibn Hilāl.
He travelled extensively, possessed solid learning, and was known for truthfulness and precision. Ibn al-Dubaythī declared him trustworthy, and Abū al-Mawāhib ibn Ṣaṣrāʾ transmitted from him. Pleasant in conversation, witty, and courteous, he was beloved in scholarly gatherings.