The second condition is that the report neither establishes that bidʿah nor strengthens it.
• Establishing: the report serves as evidence for that bidʿah.
• Strengthening: it supports or reinforces that bidʿah.
Both effects must be absent. If the narrator does not promote it but the report strengthens it, the two stated conditions have not both been met.
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Bidʿah and acceptance of a report
The second condition is that the report neither establishes that bidʿah nor strengthens it.
• Establishing: the report serves as evidence for that bidʿah.
• Strengthening: it supports or reinforces that bidʿah.
Both effects must be absent. If the narrator does not promote it but the report strengthens it, the two stated conditions have not both been met.