Translation:

59. With Him are the keys of the Unseen the treasures that none knoweth but He. He knoweth whatever there is on the earth and in the sea. Not a leaf doth fall but with His knowledge: there is not a grain in the darkness (or depths) of the earth nor anything fresh or dry (green or withered) but is (inscribed) in a Record Clear (to those who can read).

Notes (Tafseer)

879. Mafatih: Plural of either miftah= a key, or maftah= a treasure. Both meanings are implied, and I have accordingly put both in my translation.

880. This is the mystic Record, the archetypal Plan, the Eternal Law, according to which everything seen and unseen is ordered and regulated. There is much mystic doctrine here, explained by beautiful metaphors and illustrations. The simplest things in Nature are subject to His Law. The fresh and the withered, the living and the lifeless-nothing is outside the Plan of His Creation.