62:5
(The) likeness (of) those who were entrusted (with) the Taurat then not they bore it, (is) like the donkey who carries books. Wretched is (the) example (of) the people who deny (the) Signs (of) Allah. And Allah (does) not guide the people, the wrongdoers.

31:19
And be moderate in your pace and lower [of] your voice. Indeed, (the) harshest (of all) sounds (is) surely (the) voice (of) the donkeys."

2:259
Or like the one who passed by a township, and it (had) overturned on its roofs. He said, "How (will) bring to life this (town) Allah after its death?" Then he was made to die (by) Allah (for) a hundred year(s), then He raised him. He said, "How long (have) you remained?" He said, "I remained (for) a day or a part (of) a day." He said, "Nay, you (have) remained one hundred year(s). Then look at your food and your drink, (they did) not change with time, and look at your donkey, and We will make you a sign for the people. And look at the bones how We raise them, then We cover them (with) flesh." Then when became clear to him, he said, "I know that Allah (is) on every thing All-Powerful."

74:50
As if they (were) donkeys frightened,

16:8
And horses and mules and donkeys for you to ride them and (as) adornment. And He creates what not you know.

35:27
Do not you see that Allah sends down from the sky water, then We bring forth therewith fruits (of) various [their] colors? And in the mountains (are) tracts, white and red (of) various [their] colors, and intensely black.