Translation:

15. There was for Saba' aforetime a Sign in their homeland two Gardens to the right and to the left. Eat of the Sustenance (provided) by your Lord and be grateful to Him: a territory fair and happy and a Lord Oft-Forgiving!

Notes (Tafseer)

3810. This is the same city and territory in Yemen as is mentioned in xxvii. 22: see note there as to its location. There the period was the time of Solomon and Queen Bilqis. Here it is some centuries later. It was still a happy and prosperous country, amply irrigated from the Maarib dam. Its roads or perhaps its canals, were skirted by gardens on both sides, right and left: at any given point, you always saw two gardens. It produced fruit, spices, and frankincense, and got the name of Araby the Blest for that part of the country.

3811. The land was fair to look upon; the people happy and prosperous; and they enjoyed the blessings of Allah, Who is Gracious and does not punish small human faults or weaknesses.