سُبْحَانَ ٱللَّٰهِ
Holy Qur'an
Al-Qur'an
Kids Qur'an
Most of the commentators assume - not very convincingly - that the "two other gardens" are those to which believers of lesser merit will attain. As against this weak and somewhat arbitrary interpretation, it seems to me that the juxtaposition of "two other gardens" with the "two" previously mentioned is meant to convey the idea of infinity in connection with the concept of paradise as such: gardens beyond gardens beyond gardens in an endless vista, slightly varying in description, but all of them symbols of supreme bliss.
See n. 5205 above.