Did Al-Isra' wal Mi'raj take place on the 27th of Rajab?

It was not established in which night the Isra’ and Mi’raj took place. And this is from the kindness of Allah, because if it was established, it would have become a matter of interest for the people of Bid'ah (innovators in the religion). Allah the Almighty has concealed it. We believe in Al-Isra' wal Mi'raj, however we do not ascertain which night it happened in. We have no right to look in which night (i.e., it took place). Where's the benefit in it? Yes.