Articleship Help

Hello,

I recently cleared my interview in Grant Thornton and got offered a position as an article. 

The HR Manager there said that they were running a little low on articleship registration seats and told me to get registered with another article, after which he would give me a loanstaff agreement which i would have to get signed by the firm i get registered under.

I would work for Grant Thornton and get paid by them, and also get the experience certificate from them but would be registered as an article under the original firm.

Now ive asked around and come to know that this is a common practice and many big firms do it.

But i still want to confirm if it is right and whether there is any possibility that it would adversely affect me in the future.

Also, please provide the link to any post by icai authorizing loan of articles by one firm from another if possible.

Regards

Kunwar Khurana