Sunan At-Tirmidhi
Hadith #3166
Narrated Abu Hurairah:that the Messenger of Allah (ﷺ) said: ""Ibrahim, peace be upon him, did not lie about anything at all - except for three: 'Verily I am sick (37:89)' while he was not sick. And his saying about Sarah: 'She is my sister' and his saying: 'Nay, this one, the biggest of them did it (21:)