Abū l-Ḥasan 'Alī ibn Abī l-Rijāl al-Shaybani[1] (Arabic: أبو الحسن علي ابن أبي الرجال) (commonly known in European languages as Haly, Hali, Albohazen Haly filii Abenragel or Haly Abenragel, from ibn Rijal) was an Arab[2] astrologer of the 10th to 11th century CE / 4th to 5th century AH best known for his Kitāb al-bāri' fī aḥkām an-nujūm.[3]