It runs to sixty-five lines (1).
He died in 318 AH, at the age of one hundred.
Al-Nahrawān is pronounced with a fatḥa; al-Samʿānī erred by giving its rāʾ a ḍamma.

289 – al-Battānī, Abū ʿAbd Allāh Muḥammad ibn Jābir ibn Sinān *
The author of the celebrated Zij (astronomical handbook), Abū ʿAbd Allāh Muḥammad ibn Jābir ibn Sinān al-Ḥarrānī—better known as al-Battānī—was a mathematician and astronomer renowned for his computations, observational records, and prowess in the discipline. He was originally a Sabian, astray from the truth; it appears that he later embraced Islam and adopted the name Muḥammad. He left several treatises on astronomy (ʿilm al-hayʾa).

Battān—with a doubled tāʾ (2)—is a village in the environs of Ḥarrān. Al-Battānī died on his return from Baghdad, at Qaṣr al-Ḥaḍr (3), a small town near Tikrit. About it ʿAdī ibn Zayd said:
“The lord of al-Ḥaḍr when he built it—when the Tigris … paid him tribute, and the Khābūr.”
That lord was King Ḍayzan, nicknamed al-Sāṭirūn—a Syriac word meaning “the king.” He was one of the petty monarchs; Ardashīr besieged him for four years without being able to subdue him.

Ḍayzan had a daughter of surpassing beauty; from within the fortress she caught sight