الْوَصْلُ عَطْفُ بَعْضِ الْجُمَلِ عَلَى بَعْضٍ، وَالْفَصْلُ تَرْكُهُ
Waṣl coordinates one clause with another; faṣl leaves that coordination unexpressed.
The definition concerns the linking of complete clauses rather than every possible coordination of individual words. “Zayd and ʿAmr” coordinates names; “Zayd came and ʿAmr departed” coordinates two predications and therefore enters this chapter directly.
The discussion concentrates on coordination with wāw because other particles, notably faʾ and thumma, contribute additional ordering or temporal meaning. Mere coordination through wāw needs a more delicate inquiry into semantic compatibility.
ConstructionWhat is joinedRelevance
Zayd wa-ʿAmrTwo nounsContrast
Jāʾa Zayd wa-dhahaba ʿAmrTwo clausesCentral case
Jāʾa Zayd fa-dhahaba ʿAmrTwo ordered clausesMeaning of faʾ