Al-Qāsim ibn Muḥammad ibn Abī Bakr (Arabic: قاسم إبن محمد) (born 36 or 38 AH and died 106 AH or 108 AH; corresponding to c. 660/662 and 728/730) was a jurist in early Islam.
In the Naqshbandi Sufi order (originated in the 14th century) he is regarded as a link in the Golden Chain, in which he was purportedly succeeded by his maternal grandson Ja'far al-Sadiq.
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