Ayesha reported,

Prayer was first prescribed as two units. The prayer of the traveler was left as it was, and the prayer of the resident was made complete.Zuhri said, I asked Urwa, "Why does Ayesha pray the full prayer while traveling?"He replied, "She interpreted it the same way Uthman interpreted it."

Bukhari 1090

Sahih

حدثنا عبد الله بن محمد قال حدثنا سفيان عن الزهري عن عروة

عن عائشة رضي الله عنها قالت

الصلاة أول ما فرضت ركعتين فأقرت صلاة السفر وأتمت صلاة الحضر قال الزهري فقلت لعروة ما بال عائشة تتم قال تأولت ما تأول عثمان

البخاري 1090صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Shortening
Chapter
Shortening prayer when leaving one's place
Numbering
Darussalam 1090
Bukhari 1090