COMMENTARY on 9:99
A. Yusuf Ali:

Translation:
But some of the desert Arabs believe in Allah and the Last Day, and look on their payments as pious gifts bringing them nearer to Allah and obtaining the prayers of the Messenger. Aye, indeed they bring them nearer (to Him): soon will Allah admit them to His Mercy 1347: for Allah is Oft-forgiving, Most Merciful.
Commentary:

1347  The Mercy of Allah is always present, as the sun is always shining. But when we have prepared ourselves to receive it, we come to the full enjoyment of it, as a man who was in a shade comes out by his effort into the open, and basks in sunshine.