Risālah dar maʿrifat-i awqāt-i sāʿāt-i ayyām-i asābīʿ
- Contributor(s):
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- Ja‘far ibn Muḥammad Abū Ma‘shar al-Balkhī — Attributed name
- Manuscripts:
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- IO Islamic 3786 (Oriental Manuscripts, British Library) — 16th Century – 17th Century; Iran and India
- RSPA 219 (Oriental Manuscripts, British Library) — 19th Century; India
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.