• Starting point: a ḥasan li-dhātihi report: relatively lower precision with the other conditions present.
• Strengthening: support from other chains compensates for that deficiency.
• Result: the report is ṣaḥīḥ li-ghayrihi.
• Ruling: it may be acted upon and used as evidence, above ḥasan li-dhātihi and below ṣaḥīḥ li-dhātihi.
The tooth-stick example illustrates this through Muḥammad ibn ʿAmr's chain and support from other transmissions.