The German parliament narrowly rejected on Friday an opposition-sponsored bill calling for tougher rules on migration that risked becoming the first draft legislation to pass thanks to a far-right party and became a focus of a controversy about the attitude of the front-runner in Germany’s upcoming election toward the far right.

BERLIN — Germany’s parliament is expected to vote Friday on an opposition bill calling for tougher rules on migration that could become the first legislation to pass thanks to a far-right party — adding to a controversy about the attitude of the front-runner in Germany’s upcoming election toward the far right.

Germany’s conservative bloc requested a surprise recess in the lower house of parliament on Friday in a sign of the tension over plans to pass a hard-line immigration bill with backing of the far right.