Sahih Muslim
The Book Pertaining to Repentance and Exhortation to Repentance (Kitab Al-Tauba)
Book Number: 037 / Hadith Number: 6649
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Allah is self-respecting and a believer is also self-respecting and the respect of Allah is injured if a believer does what He has forbidden him to do.