Writing Articles

I just got a job offer to write in Bankruptcy in USA which I have to turn down as I don't have any legal background on this topic. My writer needs 5 articles of 600 words each. I feel honored that he thinks I can write it but it is too profound for my liking. Since I earn a comfortable income from my present employment since the last 4 years, I am not too hard up for extra work. It will be more pocket money, that's all. But it is nice to receive an email for job order now and then especially when I am free to write.