تفسير : and that thou thirstest not therein nor are exposed to the sun's heat) he says: you are not going to sweat.
Jalāl al-Dīn al-Maḥallī
تفسير : and it is indeed [assured] for you (read wa-annaka or wa-innaka, as a supplement to the subject of inna [sc. laka, that is, ‘you’] and its clause) neither to be thirsty therein, nor to suffer the sun’: you will not be exposed to any heat of a midday sun, for there is no sun in paradise.