Sabab wurūd al-ḥadīth is the event, question or setting in which a prophetic statement or report occurred.
Knowledge of the occasion can clarify the audience, context and intended application of a report. Not every narration has a known occasion, however, and the occasion must itself be established by evidence rather than a later guess. Dedicated works on such occasions require the same care in attribution and source verification.
The unifying purpose of these disciplines is correct identification, faithful preservation of wording, verified reception and fair assessment of variant evidence. Titles, genealogies, teaching etiquette, written records and forms of compilation all support that purpose.
God is the giver of success and guidance; there is no deity but Him. In Him I trust and to Him I turn.