Question:

I would like to know is it jaaiz to write on the hands and arms with pens.

Answer:

Nabi Muhammad Sallallahu Alaihi Wasallam has declared the prohibition of tattooing by cursing both the tattoo artist and the one tattooed, as is evident from the following hadith:

“لعَنَ اللََُّّ الوَاصِلَةَ وَالمسُْتَوْصِلَةَ، وَالوَاشَِِةَ وَالمسُْتَوْشَِِة ”