Majma al-Zawaid 7836 — Ila'

Wabarah reports from a man of his family that he took an oath of ila' from his wife for ten days. He asked Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) about it, and he said, "When four months pass, then it is an ila'."
Tabarani recorded it. Its chain contains a narrator who has not been named.