[16] i.e., worldly pleasures.
[17] Allah will accept their good deeds, multiply their reward, and overlook their sins.
[18] Allah gives provision for all in the life of this world without exception.
[19] In beauty, wealth, power, knowledge, etc; as a test for them, to see how they react.
[21] ’uff: an expression of irritation and disapproval.
[22] It is a metaphor; i.e., shows the parents the utmost humbleness like a bird lowering its wing as it hugs its young or so.
[23] For they are at their weakest phase of life, similar to what he was in his early childhood.
[24] Islam is a religion of moderation and good consideration; neither wastefully nor stingily, but moderate.
[25] Disbelievers are the most ungrateful ones as they rebel against Allah's commands instead of showing obedience to Him, for they follow the way of the devil towards Allah.