Abdullah meeting his grossly overweight "fiancées".
The fiancées: Greetings, dear husband! Abdullah:What!
Howl, on seeing his infant son for the first time:
"My word, he's ugly! Chip off the old block!"
Abdullah notes that the genie seems to go out of its way to grant wishes in the most inconvenient way possible for him. His companion insists that isn't true and even bets some money on the next wish going perfectly fine. Abdullah wishes for them to escape from some assailants which the genie grants by turning him and his companion into frogs. The companion notes that at least Abdullah got some money out of it.
The genie's reaction to Abdullah's idea of challenging fate.
"You're being childish. Or heroic. Or possibly mad."
In the same scene, this piece of dialogue:
"You make it very difficult," the genie said pathetically, "for that wish to go wrong." "Such was my aim,” said Abdullah. "If I could discover how to make none of your wishes go wrong, it would be a great relief."
Sophie very nearly attacking the soldier after she and Abdullah see him in the castle disguised as a princess. She is completely furious at how the soldier seemingly took Morgan with him into danger to the castle in the air, and is determined to have it at him. The only thing that stops her is Morgan's crying.
After Sophie's spell is taken off her, Sophie, Lettie, Suliman and Abdullah use the mirrors to see whether the spell's been taken off for Morgan as well. They end up seeing Morgan in a fury, with the soldier holding him with a very panicked look on his face. And the genie can also be seen, but he looks just as helpless and panicked as the soldier.
At one point during the carpet-ride to the castle in the air, Abdullah convinces Sophie to talk about Howl to distract herself from her fear of heights:
Abdullah: Tell me of this Wizard Howl of yours.
Sophie (proudly): He’s the best wizard in Ingary or anywhere else. If he’d only had time, he would have defeated that djinn. And he’s sly and selfish and vain as a peacock and cowardly, and you can’t pin him down to anything.
Abdullah: Indeed? Strange that you should speak so proudly such a list of vices, most loving of ladies.
Sophie (angrily): What do you mean, vices? I was just describing Howl.
The soldier is set on getting Princess Valeria's hand in marriage as a reward for rescuing the princesses from the djinns. However, he discovers that the princess is only four years old! He feels understandably foolish and annoyed after that.
It's never mentioned in the text itself and so should probably be considered of dubious canonicity, but the chapter heading illustrations in at least one edition added an amusing detail to the pictures of men that Abdullah collects for Flower-in-the-Night: one of them is Howl!