WITNESS

Fī istikhrāj sāʿāt mā bayna ṭulūʿ al-fajr wa-ṭulūʿ al-shams kulla yawmin min ayyām al-sanah bi-madīnah Qāʾin_Patna_Khuda Bakhsh Oriental Public Library_NONE (Patna)_2468

References

Al-Rasāʾil Al-Mutafarriqa Fī Al-hayʾa Li-Mutaqaddimī Wa muʿāṣirī Al-Bīrūnī. 1948. Hyderabad.

No. 4.