Nahj al-Balāgha

Hadith 927
satan-iblishumility
ومن خطبة له عليه السلام تسمّي القاصعة. وهي تتضمن ذم إبليس لعنة اللّه، عَلى استكباره، وتركه السجود لآدم (عليه السلام)، وأنه أول من أظهر العصبية وتبع الحمية، وتحذير الناس من سلوك طريقته.
Known as “al-Khuṭbah al-Qāṣi‘ah” (Sermon of Disparagement). It comprises disparagement of Satan [Iblīs] for his vanity and his refusing to prostrate before Adam [a.s.], and his being the first to display bigotry and to act through vanity; it comprises a warning to people treading in Satan’s path.
Source: al-Sharīf al-Raḍī