Question: Why devotees don’t pick tulasi leaves on dvadasi? Is there any reason mentioned in scriptures or any mention by our acaryas?
Answer by Romapada Swami:
Hari Bhakti Vilasa explicitly enjoins that one must not pick Tulasi leaves on Dvadasi, but the reason behind this prohibition is not found anywhere, at least by any learned scholars I contacted.
See two attached files below for details: