Passing through Muzdalifah without staying overnight is not sufficient
Machine translationRead the Arabic original
Question: Is passing through Muzdalifah without staying overnight until midnight sufficient?
Answer: Staying overnight in Muzdalifah is an obligatory part of Hajj. If a person does not stay there, he must pay a fidyah (a sacrificial animal slaughtered for the poor of the Haram), which is sufficient as an udhiyah. However, if a pilgrim passes through Muzdalifah and does not stay there, but then returns to it before dawn and remains there, even for a short time, he owes no fidyah.
Answer: Staying overnight in Muzdalifah is an obligatory part of Hajj. If a person does not stay there, he must pay a fidyah (a sacrificial animal slaughtered for the poor of the Haram), which is sufficient as an udhiyah. However, if a pilgrim passes through Muzdalifah and does not stay there, but then returns to it before dawn and remains there, even for a short time, he owes no fidyah.
Source
binbaz.org.sa
The Arabic text is copied verbatim from the original source, without any edits.