Hadith 10:870
Abu Bakr narrated to us, he said: Waki’ narrated to us, from Sufyan, from Mughira, from Ibrahim, who said: If he swears [an oath of abstinence] for less than four [months], he is a *muli* (one who has taken an oath of abstinence from his wife).
حدثنا أبو بكر قال نا وكيع عن سفيان عن مغيرة عن إبراهيم قال إذا حلف على دون أربعة فهو مول