Good Manners and Form (Al-Adab)
Ṣaḥīḥ al-Bukhārī 6078
إِنَّكِ إِذَا كُنْتِ رَاضِيَةً قُلْتِ بَلَى وَرَبِّ مُحَمَّدٍ. وَإِذَا كُنْتِ سَاخِطَةً قُلْتِ لاَ وَرَبِّ إِبْرَاهِيمَ
innaki idhā kunti rāḍiyatan qulti balā warabbi muḥammadin. wa-idhā kunti sākhiṭatan qulti lā warabbi ibrāhīma
Transliteration generated from the Arabic vowel marks
The full narration
Narrated `Aisha:Allah's Messenger (ﷺ) said, " I know whether you are angry or pleased." I said, "How do you know that, Allah's Messenger (ﷺ)?" He said, "When you are pleased, you say, "Yes, by the Lord of Muhammad,' but when you are angry, you say, 'No, by the Lord of Abraham!' " I said, "Yes, I do not leave, except your name
Source
Ṣaḥīḥ al-Bukhārī · 6078
Ṣaḥīḥ