What is the evidence of the one who holds that shortening the prayer is obligatory?

Question : As for the one who holds that shortening the prayer is obligatory, what is the evidence for this opinion?

Answer : Al-Bukhari and others narrated from 'A'ishah: "The first prescribed sunnah was two rak'ahs, and the prayer of travel was two rak'ahs, at the very beginning. The original state. The original state was two. At the very beginning, the prayer was two rak'ahs, then it was increased for the resident. Yes, and it remained as the first obligation. Now, this is evidence. Another piece of evidence: the Prophet (peace and blessings be upon him) said, 'Pray as you see me praying.' Yes. And he did not complete the prayer while traveling, meaning it is not recorded that he ever completed the prayer while traveling."