What is the ruling if hair detaches after the Ghusl but before washing the point of detachment?

Chapter on Ghusl from Janabah (Major Impurity)

Al-Mughni

Book of Purification

Book 2 · Issue 4 · Bab 9

Open in Qurani

Primary text

If the hair detaches after the Ghusl has been performed, it is not obligatory to wash the place from which it detached; this does not invalidate the Ghusl.