My Rebbie doesn't know

 

Mori V'Rabi doesn't know In שלחן ערוך (Y.D. 283) it says One may not write a מגילה with only a few פרשיות of the Torah. One must write a complete ספר תורה with all the (פרשיות - (חמשה חומשי תורה  The ט"ז writes, that being it is too expensive to write a complete  ספר תורה for children learning Chumash, therefore, Poskim were lenient and allowed to write a מגילה with just a few פרשיות. The היתר is based on the Pasuk עת לעשות לה' הפרו תורתך. There are times when we don't follow the Halacha for a greater benefit. The היתר is only for this purpose so children will be able to learn etc. Mori V’rabi Harav Hagaon R. Shlomo Miller Shlita  said he doesn't know of a היתר for Sofrim to write theפרשת קטרת   on a קלף. He doesn't think that a Segulah to become rich is enough of a reason for "הפרו תורתך"