What may two chains carrying the fifty-thousand claim establish without overreach?

Narrator Criticism: Al-Mughīrah b. Saʿīd, Shaqīq and Jābir al-Juʿfī

• Consensus of two independent critics on authenticity of the collection
• Complete identification of every alleged teacher of Jābir
• Every chain for each claimed narration has become known
• Parallel evidence about attribution of the claim to Jābir