It's not based on any knightly code, though.

He also shows loyalty to the knightly code of conduct by never taking unfair advantage of an opponent.

If Kenrick chose not to follow the knightly code, he'd attack while Jeremy was helpless.

"Is there some obscure part of the knightly code that prohibits laundering those garments?'

And in such a situation, his noble, knightly code demanded that he defend her, against both his ignoble desires and her own.

Furusiyya: origins of a knightly code (Al-Ahram)

Once he learns not to hold to outdated knightly codes --" "Honor is never outdated," said Sturm.

The dwarves and knights fought side by side, and young Kharas had been deeply impressed by the knightly Code and the Measure.

(I'm not certain but I believe that ignoring people is against their knightly code, though Sturm often ignored me, now that I come to think of it.

After experiencing a vision of King Arthur (voiced by John Gielgud) that reminds him of his knightly code, Bowen agrees to help as well.

Most interesting about these scenes is the dilemma Sir Gawain faces, where he must be courteous to Lady Bertilak (Knightly Code), and at the same time he must be loyal to his host.

The Knight Marischal shouted back that since it was unthinkable that any such deed would be carried out, and a disgrace to the knightly code that it was so much as suggested, there would be no yielding up of the town.